stm32f1/i2c: remove duplicated code
stm32f1/i2c: remove duplicated code

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