boards/cc2650stk: model features in Kconfig
boards/cc2650stk: model features in Kconfig

Signed-off-by: Jean Pierre Dudey <341388fa1817ca285e65547384a9727ce7f6d39a@hotmail.com>

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