drivers/kw2x: fix packet address setting
drivers/kw2x: fix packet address setting

 - fix dst address reversed in packet header
 - code and docu cleanup
 - based on at86rf2xx

stevenj/RIOT,haoyangyu/RIOT,plushvoxel/RIOT,Hyungsin/RIOT-OS,LudwigOrtmann/RIOT,ant9000/RIOT,aeneby/RIOT,smlng/RIOT,kerneltask/RIOT,altairpearl/RIOT,haoyangyu/RIOT,kb2ma/RIOT,lazytech-org/RIOT,Josar/RIOT,RubikonAlpha/RIOT,kbumsik/RIOT,attdona/RIOT,RubikonAlpha/RIOT,syin2/RIOT,authmillenon/RIOT,gautric/RIOT,l3nko/RIOT,ks156/RIOT,watr-li/RIOT,basilfx/RIOT,lazytech-org/RIOT,beurdouche/RIOT,BytesGalore/RIOT,immesys/RiSyn,kYc0o/RIOT,msolters/RIOT,miri64/RIOT,malosek/RIOT,asanka-code/RIOT,jremmert-phytec-iot/RIOT,lazytech-org/RIOT,basilfx/RIOT,neumodisch/RIOT,latsku/RIOT,LudwigKnuepfer/RIOT,binarylemon/RIOT,A-Paul/RIOT,biboc/RIOT,jfischer-phytec-iot/RIOT,hamilton-mote/RIOT-OS,mfrey/RIOT,l3nko/RIOT,hamilton-mote/RIOT-OS,jremmert-phytec-iot/RIOT,d00616/RIOT,hamilton-mote/RIOT-OS,BytesGalore/RIOT,Yonezawa-T2/RIOT,neumodisch/RIOT,lazytech-org/RIOT,asanka-code/RIOT,wentaoshang/RIOT,altairpearl/RIOT,x3ro/RIOT,toonst/RIOT,tfar/RIOT,authmillenon/RIOT,mtausig/RIOT,altairpearl/RIOT,herrfz/RIOT,yogo1212/RIOT,jremmert-phytec-iot/RIOT,syin2/RIOT,msolters/RIOT,asanka-code/RIOT,adrianghc/RIOT,daniel-k/RIOT,MohmadAyman/RIOT,rfuentess/RIOT,kerneltask/RIOT,rajma996/RIOT,OTAkeys/RIOT,toonst/RIOT,stevenj/RIOT,katezilla/RIOT,RBartz/RIOT,alignan/RIOT,TobiasFredersdorf/RIOT,msolters/RIOT,RBartz/RIOT,Hyungsin/RIOT-OS,syin2/RIOT,malosek/RIOT,Josar/RIOT,dailab/RIOT,backenklee/RIOT,neiljay/RIOT,FrancescoErmini/RIOT,biboc/RIOT,alignan/RIOT,mfrey/RIOT,plushvoxel/RIOT,neiljay/RIOT,adjih/RIOT,dhruvvyas90/RIOT,gautric/RIOT,FrancescoErmini/RIOT,authmillenon/RIOT,kerneltask/RIOT,altairpearl/RIOT,FrancescoErmini/RIOT,TobiasFredersdorf/RIOT,tfar/RIOT,roberthartung/RIOT,mtausig/RIOT,kaspar030/RIOT,A-Paul/RIOT,LudwigKnuepfer/RIOT,BytesGalore/RIOT,kerneltask/RIOT,kbumsik/RIOT,malosek/RIOT,dkm/RIOT,gebart/RIOT,MohmadAyman/RIOT,khhhh/RIOT,cladmi/RIOT,kaspar030/RIOT,watr-li/RIOT,avmelnikoff/RIOT,lebrush/RIOT,asanka-code/RIOT,rfuentess/RIOT,backenklee/RIOT,dkm/RIOT,kaleb-himes/RIOT,brettswann/RIOT,daniel-k/RIOT,attdona/RIOT,miri64/RIOT,dhruvvyas90/RIOT,adjih/RIOT,kYc0o/RIOT,mfrey/RIOT,beurdouche/RIOT,latsku/RIOT,tfar/RIOT,RIOT-OS/RIOT,x3ro/RIOT,kaspar030/RIOT,plushvoxel/RIOT,TobiasFredersdorf/RIOT,immesys/RiSyn,brettswann/RIOT,LudwigKnuepfer/RIOT,backenklee/RIOT,rousselk/RIOT,plushvoxel/RIOT,khhhh/RIOT,lebrush/RIOT,neiljay/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,katezilla/RIOT,avmelnikoff/RIOT,jasonatran/RIOT,latsku/RIOT,gebart/RIOT,neumodisch/RIOT,kbumsik/RIOT,ant9000/RIOT,smlng/RIOT,zhuoshuguo/RIOT,jfischer-phytec-iot/RIOT,daniel-k/RIOT,rakendrathapa/RIOT,kYc0o/RIOT,RubikonAlpha/RIOT,dailab/RIOT,backenklee/RIOT,avmelnikoff/RIOT,OTAkeys/RIOT,OTAkeys/RIOT,stevenj/RIOT,latsku/RIOT,A-Paul/RIOT,asanka-code/RIOT,katezilla/RIOT,cladmi/RIOT,RIOT-OS/RIOT,TobiasFredersdorf/RIOT,shady33/RIOT,shady33/RIOT,A-Paul/RIOT,dhruvvyas90/RIOT,mziegert/RIOT,LudwigOrtmann/RIOT,RIOT-OS/RIOT,rajma996/RIOT,aeneby/RIOT,altairpearl/RIOT,mziegert/RIOT,jremmert-phytec-iot/RIOT,BytesGalore/RIOT,rakendrathapa/RIOT,immesys/RiSyn,kaleb-himes/RIOT,binarylemon/RIOT,dhruvvyas90/RIOT,daniel-k/RIOT,dkm/RIOT,adjih/RIOT,LudwigOrtmann/RIOT,adrianghc/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,kaleb-himes/RIOT,smlng/RIOT,jbeyerstedt/RIOT-OTA-update,zhuoshuguo/RIOT,plushvoxel/RIOT,dkm/RIOT,aeneby/RIOT,binarylemon/RIOT,hamilton-mote/RIOT-OS,Ell-i/RIOT,avmelnikoff/RIOT,miri64/RIOT,TobiasFredersdorf/RIOT,tfar/RIOT,ks156/RIOT,herrfz/RIOT,katezilla/RIOT,RubikonAlpha/RIOT,rousselk/RIOT,msolters/RIOT,haoyangyu/RIOT,gebart/RIOT,rakendrathapa/RIOT,RIOT-OS/RIOT,beurdouche/RIOT,lebrush/RIOT,toonst/RIOT,RBartz/RIOT,herrfz/RIOT,thomaseichinger/RIOT,roberthartung/RIOT,msolters/RIOT,LudwigOrtmann/RIOT,d00616/RIOT,RIOT-OS/RIOT,mtausig/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,basilfx/RIOT,altairpearl/RIOT,OlegHahm/RIOT,brettswann/RIOT,khhhh/RIOT,x3ro/RIOT,kb2ma/RIOT,ks156/RIOT,lebrush/RIOT,thomaseichinger/RIOT,aeneby/RIOT,alignan/RIOT,adrianghc/RIOT,zhuoshuguo/RIOT,attdona/RIOT,Josar/RIOT,d00616/RIOT,syin2/RIOT,immesys/RiSyn,mtausig/RIOT,msolters/RIOT,wentaoshang/RIOT,lebrush/RIOT,RubikonAlpha/RIOT,mziegert/RIOT,OTAkeys/RIOT,zhuoshuguo/RIOT,jasonatran/RIOT,RBartz/RIOT,BytesGalore/RIOT,LudwigKnuepfer/RIOT,josephnoir/RIOT,khhhh/RIOT,kYc0o/RIOT,alignan/RIOT,jbeyerstedt/RIOT-OTA-update,yogo1212/RIOT,josephnoir/RIOT,l3nko/RIOT,lebrush/RIOT,FrancescoErmini/RIOT,latsku/RIOT,malosek/RIOT,ant9000/RIOT,rousselk/RIOT,tfar/RIOT,authmillenon/RIOT,RBartz/RIOT,dhruvvyas90/RIOT,avmelnikoff/RIOT,d00616/RIOT,backenklee/RIOT,d00616/RIOT,shady33/RIOT,yogo1212/RIOT,ks156/RIOT,jbeyerstedt/RIOT-OTA-update,shady33/RIOT,rajma996/RIOT,latsku/RIOT,jfischer-phytec-iot/RIOT,jasonatran/RIOT,FrancescoErmini/RIOT,l3nko/RIOT,kb2ma/RIOT,attdona/RIOT,kb2ma/RIOT,jasonatran/RIOT,malosek/RIOT,OlegHahm/RIOT,kerneltask/RIOT,gebart/RIOT,Yonezawa-T2/RIOT,daniel-k/RIOT,ant9000/RIOT,Yonezawa-T2/RIOT,aeneby/RIOT,Ell-i/RIOT,dailab/RIOT,watr-li/RIOT,rakendrathapa/RIOT,kYc0o/RIOT,toonst/RIOT,mfrey/RIOT,beurdouche/RIOT,herrfz/RIOT,kb2ma/RIOT,alignan/RIOT,yogo1212/RIOT,mfrey/RIOT,d00616/RIOT,jbeyerstedt/RIOT-OTA-update,hamilton-mote/RIOT-OS,OTAkeys/RIOT,brettswann/RIOT,yogo1212/RIOT,attdona/RIOT,jremmert-phytec-iot/RIOT,OlegHahm/RIOT,LudwigOrtmann/RIOT,adjih/RIOT,kaleb-himes/RIOT,attdona/RIOT,basilfx/RIOT,wentaoshang/RIOT,rajma996/RIOT,katezilla/RIOT,josephnoir/RIOT,wentaoshang/RIOT,josephnoir/RIOT,Ell-i/RIOT,josephnoir/RIOT,mtausig/RIOT,Yonezawa-T2/RIOT,ant9000/RIOT,kbumsik/RIOT,adrianghc/RIOT,neumodisch/RIOT,rousselk/RIOT,cladmi/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,rousselk/RIOT,wentaoshang/RIOT,herrfz/RIOT,Ell-i/RIOT,rajma996/RIOT,mziegert/RIOT,neumodisch/RIOT,shady33/RIOT,yogo1212/RIOT,kaspar030/RIOT,Hyungsin/RIOT-OS,jasonatran/RIOT,RBartz/RIOT,OlegHahm/RIOT,thomaseichinger/RIOT,dailab/RIOT,LudwigOrtmann/RIOT,dailab/RIOT,x3ro/RIOT,Josar/RIOT,rousselk/RIOT,jbeyerstedt/RIOT-OTA-update,adrianghc/RIOT,roberthartung/RIOT,miri64/RIOT,jremmert-phytec-iot/RIOT,smlng/RIOT,Ell-i/RIOT,asanka-code/RIOT,binarylemon/RIOT,MohmadAyman/RIOT,neumodisch/RIOT,rajma996/RIOT,authmillenon/RIOT,toonst/RIOT,binarylemon/RIOT,gebart/RIOT,LudwigKnuepfer/RIOT,cladmi/RIOT,ks156/RIOT,miri64/RIOT,OlegHahm/RIOT,stevenj/RIOT,zhuoshuguo/RIOT,stevenj/RIOT,immesys/RiSyn,neiljay/RIOT,daniel-k/RIOT,haoyangyu/RIOT,mziegert/RIOT,Hyungsin/RIOT-OS,rakendrathapa/RIOT,brettswann/RIOT,zhuoshuguo/RIOT,gautric/RIOT,smlng/RIOT,A-Paul/RIOT,syin2/RIOT,basilfx/RIOT,l3nko/RIOT,adjih/RIOT,khhhh/RIOT,biboc/RIOT,wentaoshang/RIOT,RubikonAlpha/RIOT,l3nko/RIOT,shady33/RIOT,lazytech-org/RIOT,kaleb-himes/RIOT,rfuentess/RIOT,watr-li/RIOT,khhhh/RIOT,rakendrathapa/RIOT,kbumsik/RIOT,haoyangyu/RIOT,beurdouche/RIOT,mziegert/RIOT,stevenj/RIOT,Josar/RIOT,watr-li/RIOT,watr-li/RIOT,biboc/RIOT,gautric/RIOT,malosek/RIOT,Yonezawa-T2/RIOT,immesys/RiSyn,thomaseichinger/RIOT,Yonezawa-T2/RIOT,gautric/RIOT,rfuentess/RIOT,roberthartung/RIOT,authmillenon/RIOT,kaspar030/RIOT,neiljay/RIOT,rfuentess/RIOT,haoyangyu/RIOT,biboc/RIOT,binarylemon/RIOT,dkm/RIOT,jfischer-phytec-iot/RIOT,roberthartung/RIOT,brettswann/RIOT,MohmadAyman/RIOT,jfischer-phytec-iot/RIOT,MohmadAyman/RIOT,Hyungsin/RIOT-OS,MohmadAyman/RIOT,dhruvvyas90/RIOT,x3ro/RIOT,thomaseichinger/RIOT,cladmi/RIOT,FrancescoErmini/RIOT,herrfz/RIOT