ili9341: move to display devices doxygen group
ili9341: move to display devices doxygen group

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