cpu/esp8266/periph: adc_sample() now returns int32_t
cpu/esp8266/periph: adc_sample() now returns int32_t

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