cpu/stm32f2/periph: adc_sample() now returns int32_t
cpu/stm32f2/periph: adc_sample() now returns int32_t

OlegHahm/RIOT,smlng/RIOT,yogo1212/RIOT,kaspar030/RIOT,kaspar030/RIOT,authmillenon/RIOT,mtausig/RIOT,OTAkeys/RIOT,toonst/RIOT,mtausig/RIOT,kaspar030/RIOT,miri64/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,OlegHahm/RIOT,smlng/RIOT,jasonatran/RIOT,toonst/RIOT,smlng/RIOT,ant9000/RIOT,basilfx/RIOT,OlegHahm/RIOT,kYc0o/RIOT,kYc0o/RIOT,toonst/RIOT,yogo1212/RIOT,OlegHahm/RIOT,basilfx/RIOT,smlng/RIOT,kaspar030/RIOT,smlng/RIOT,ant9000/RIOT,x3ro/RIOT,authmillenon/RIOT,yogo1212/RIOT,mtausig/RIOT,OTAkeys/RIOT,OTAkeys/RIOT,jasonatran/RIOT,jasonatran/RIOT,ant9000/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,OlegHahm/RIOT,miri64/RIOT,authmillenon/RIOT,kYc0o/RIOT,yogo1212/RIOT,RIOT-OS/RIOT,RIOT-OS/RIOT,kaspar030/RIOT,miri64/RIOT,yogo1212/RIOT,miri64/RIOT,yogo1212/RIOT,OTAkeys/RIOT,basilfx/RIOT,kYc0o/RIOT,x3ro/RIOT,ant9000/RIOT,ant9000/RIOT,toonst/RIOT,x3ro/RIOT,mtausig/RIOT,basilfx/RIOT,miri64/RIOT,jasonatran/RIOT,RIOT-OS/RIOT,kYc0o/RIOT,OTAkeys/RIOT,authmillenon/RIOT,jasonatran/RIOT,x3ro/RIOT,mtausig/RIOT,toonst/RIOT,x3ro/RIOT,basilfx/RIOT