drivers/periph_common: reworked SPI driver parts
drivers/periph_common: reworked SPI driver parts

adjih/RIOT,OlegHahm/RIOT,roberthartung/RIOT,kbumsik/RIOT,kaleb-himes/RIOT,LudwigOrtmann/RIOT,adrianghc/RIOT,kaleb-himes/RIOT,neumodisch/RIOT,ks156/RIOT,neiljay/RIOT,ant9000/RIOT,immesys/RiSyn,syin2/RIOT,LudwigOrtmann/RIOT,x3ro/RIOT,neumodisch/RIOT,miri64/RIOT,dkm/RIOT,neiljay/RIOT,kaspar030/RIOT,josephnoir/RIOT,jfischer-phytec-iot/RIOT,biboc/RIOT,OlegHahm/RIOT,OlegHahm/RIOT,beurdouche/RIOT,aeneby/RIOT,toonst/RIOT,kaspar030/RIOT,plushvoxel/RIOT,smlng/RIOT,TobiasFredersdorf/RIOT,adrianghc/RIOT,authmillenon/RIOT,mfrey/RIOT,lazytech-org/RIOT,OTAkeys/RIOT,aeneby/RIOT,gautric/RIOT,kaspar030/RIOT,smlng/RIOT,TobiasFredersdorf/RIOT,adrianghc/RIOT,kaleb-himes/RIOT,jbeyerstedt/RIOT-OTA-update,josephnoir/RIOT,adjih/RIOT,Hyungsin/RIOT-OS,BytesGalore/RIOT,beurdouche/RIOT,LudwigKnuepfer/RIOT,kerneltask/RIOT,jasonatran/RIOT,ks156/RIOT,ks156/RIOT,basilfx/RIOT,jbeyerstedt/RIOT-OTA-update,jbeyerstedt/RIOT-OTA-update,avmelnikoff/RIOT,hamilton-mote/RIOT-OS,mtausig/RIOT,gebart/RIOT,neiljay/RIOT,LudwigKnuepfer/RIOT,jbeyerstedt/RIOT-OTA-update,x3ro/RIOT,beurdouche/RIOT,miri64/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,josephnoir/RIOT,authmillenon/RIOT,BytesGalore/RIOT,kerneltask/RIOT,ks156/RIOT,x3ro/RIOT,immesys/RiSyn,A-Paul/RIOT,mtausig/RIOT,hamilton-mote/RIOT-OS,aeneby/RIOT,lazytech-org/RIOT,cladmi/RIOT,smlng/RIOT,RIOT-OS/RIOT,A-Paul/RIOT,RIOT-OS/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,plushvoxel/RIOT,yogo1212/RIOT,mtausig/RIOT,immesys/RiSyn,toonst/RIOT,ant9000/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,rfuentess/RIOT,dailab/RIOT,basilfx/RIOT,kaspar030/RIOT,kbumsik/RIOT,avmelnikoff/RIOT,miri64/RIOT,gautric/RIOT,Hyungsin/RIOT-OS,jfischer-phytec-iot/RIOT,gebart/RIOT,aeneby/RIOT,neumodisch/RIOT,jasonatran/RIOT,yogo1212/RIOT,syin2/RIOT,hamilton-mote/RIOT-OS,OTAkeys/RIOT,thomaseichinger/RIOT,BytesGalore/RIOT,dkm/RIOT,rfuentess/RIOT,Ell-i/RIOT,kerneltask/RIOT,adjih/RIOT,kaleb-himes/RIOT,ks156/RIOT,hamilton-mote/RIOT-OS,roberthartung/RIOT,dkm/RIOT,Josar/RIOT,dailab/RIOT,gebart/RIOT,cladmi/RIOT,immesys/RiSyn,miri64/RIOT,LudwigKnuepfer/RIOT,dkm/RIOT,josephnoir/RIOT,neumodisch/RIOT,avmelnikoff/RIOT,LudwigKnuepfer/RIOT,basilfx/RIOT,LudwigOrtmann/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,LudwigKnuepfer/RIOT,syin2/RIOT,lazytech-org/RIOT,gautric/RIOT,cladmi/RIOT,mtausig/RIOT,syin2/RIOT,basilfx/RIOT,thomaseichinger/RIOT,dkm/RIOT,lazytech-org/RIOT,avmelnikoff/RIOT,dailab/RIOT,thomaseichinger/RIOT,lazytech-org/RIOT,biboc/RIOT,jfischer-phytec-iot/RIOT,roberthartung/RIOT,OlegHahm/RIOT,mfrey/RIOT,yogo1212/RIOT,basilfx/RIOT,kbumsik/RIOT,authmillenon/RIOT,hamilton-mote/RIOT-OS,TobiasFredersdorf/RIOT,immesys/RiSyn,Ell-i/RIOT,gebart/RIOT,x3ro/RIOT,mfrey/RIOT,roberthartung/RIOT,kerneltask/RIOT,biboc/RIOT,RIOT-OS/RIOT,rfuentess/RIOT,thomaseichinger/RIOT,A-Paul/RIOT,authmillenon/RIOT,beurdouche/RIOT,Josar/RIOT,smlng/RIOT,rfuentess/RIOT,mfrey/RIOT,plushvoxel/RIOT,adrianghc/RIOT,miri64/RIOT,BytesGalore/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,jbeyerstedt/RIOT-OTA-update,A-Paul/RIOT,LudwigOrtmann/RIOT,OTAkeys/RIOT,beurdouche/RIOT,biboc/RIOT,TobiasFredersdorf/RIOT,Josar/RIOT,neiljay/RIOT,Hyungsin/RIOT-OS,kYc0o/RIOT,jasonatran/RIOT,Hyungsin/RIOT-OS,yogo1212/RIOT,BytesGalore/RIOT,kYc0o/RIOT,jfischer-phytec-iot/RIOT,ant9000/RIOT,cladmi/RIOT,mtausig/RIOT,toonst/RIOT,Hyungsin/RIOT-OS,ant9000/RIOT,ant9000/RIOT,rfuentess/RIOT,aeneby/RIOT,OTAkeys/RIOT,kYc0o/RIOT,gebart/RIOT,Ell-i/RIOT,smlng/RIOT,kaleb-himes/RIOT,syin2/RIOT,x3ro/RIOT,kbumsik/RIOT,thomaseichinger/RIOT,avmelnikoff/RIOT,jasonatran/RIOT,kerneltask/RIOT,authmillenon/RIOT,yogo1212/RIOT,plushvoxel/RIOT,adjih/RIOT,Ell-i/RIOT,OTAkeys/RIOT,yogo1212/RIOT,LudwigOrtmann/RIOT,roberthartung/RIOT,Ell-i/RIOT,toonst/RIOT,Josar/RIOT,cladmi/RIOT,neumodisch/RIOT,kaspar030/RIOT,LudwigOrtmann/RIOT,jasonatran/RIOT,toonst/RIOT,biboc/RIOT,neumodisch/RIOT,TobiasFredersdorf/RIOT,mfrey/RIOT,immesys/RiSyn,dailab/RIOT,kYc0o/RIOT,kYc0o/RIOT,RIOT-OS/RIOT,kbumsik/RIOT,jfischer-phytec-iot/RIOT,A-Paul/RIOT,plushvoxel/RIOT,OlegHahm/RIOT,dailab/RIOT,neiljay/RIOT,gautric/RIOT,adjih/RIOT,gautric/RIOT,adrianghc/RIOT,Josar/RIOT,josephnoir/RIOT