cpu/stm32_common: adapt SPI driver to use DMA
cpu/stm32_common: adapt SPI driver to use DMA

kbumsik/RIOT,smlng/RIOT,OlegHahm/RIOT,mtausig/RIOT,mfrey/RIOT,basilfx/RIOT,kbumsik/RIOT,rfuentess/RIOT,authmillenon/RIOT,avmelnikoff/RIOT,RIOT-OS/RIOT,x3ro/RIOT,cladmi/RIOT,A-Paul/RIOT,lazytech-org/RIOT,authmillenon/RIOT,basilfx/RIOT,neiljay/RIOT,RIOT-OS/RIOT,OTAkeys/RIOT,yogo1212/RIOT,gebart/RIOT,OTAkeys/RIOT,ant9000/RIOT,OlegHahm/RIOT,gebart/RIOT,authmillenon/RIOT,kYc0o/RIOT,kbumsik/RIOT,ant9000/RIOT,miri64/RIOT,josephnoir/RIOT,ant9000/RIOT,basilfx/RIOT,rfuentess/RIOT,miri64/RIOT,ant9000/RIOT,kYc0o/RIOT,kYc0o/RIOT,gebart/RIOT,A-Paul/RIOT,smlng/RIOT,cladmi/RIOT,kYc0o/RIOT,lazytech-org/RIOT,aeneby/RIOT,kbumsik/RIOT,mtausig/RIOT,toonst/RIOT,kaspar030/RIOT,gebart/RIOT,toonst/RIOT,RIOT-OS/RIOT,biboc/RIOT,neiljay/RIOT,mtausig/RIOT,neiljay/RIOT,aeneby/RIOT,toonst/RIOT,josephnoir/RIOT,ant9000/RIOT,OlegHahm/RIOT,avmelnikoff/RIOT,x3ro/RIOT,mfrey/RIOT,OTAkeys/RIOT,x3ro/RIOT,A-Paul/RIOT,authmillenon/RIOT,authmillenon/RIOT,jasonatran/RIOT,OTAkeys/RIOT,neiljay/RIOT,rfuentess/RIOT,kaspar030/RIOT,BytesGalore/RIOT,toonst/RIOT,aeneby/RIOT,neiljay/RIOT,miri64/RIOT,biboc/RIOT,kaspar030/RIOT,mfrey/RIOT,A-Paul/RIOT,mfrey/RIOT,aeneby/RIOT,yogo1212/RIOT,aeneby/RIOT,BytesGalore/RIOT,josephnoir/RIOT,avmelnikoff/RIOT,miri64/RIOT,jasonatran/RIOT,cladmi/RIOT,kaspar030/RIOT,OTAkeys/RIOT,kbumsik/RIOT,RIOT-OS/RIOT,x3ro/RIOT,cladmi/RIOT,smlng/RIOT,yogo1212/RIOT,biboc/RIOT,mtausig/RIOT,yogo1212/RIOT,biboc/RIOT,avmelnikoff/RIOT,yogo1212/RIOT,avmelnikoff/RIOT,cladmi/RIOT,lazytech-org/RIOT,jasonatran/RIOT,rfuentess/RIOT,biboc/RIOT,BytesGalore/RIOT,A-Paul/RIOT,basilfx/RIOT,rfuentess/RIOT,x3ro/RIOT,josephnoir/RIOT,lazytech-org/RIOT,josephnoir/RIOT,BytesGalore/RIOT,gebart/RIOT,basilfx/RIOT,OlegHahm/RIOT,kaspar030/RIOT,lazytech-org/RIOT,mfrey/RIOT,jasonatran/RIOT,smlng/RIOT,RIOT-OS/RIOT,OlegHahm/RIOT,miri64/RIOT,mtausig/RIOT,BytesGalore/RIOT,smlng/RIOT,yogo1212/RIOT,jasonatran/RIOT,toonst/RIOT,kYc0o/RIOT,authmillenon/RIOT