use e_gadcon_zone_get for dnd-related functions to ensure we get the right zone: fixes toolbar dnd
use e_gadcon_zone_get for dnd-related functions to ensure we get the right zone: fixes toolbar dnd

tizenorg/platform.upstream.enlightenment,tasn/enlightenment,rvandegrift/e,FlorentRevest/Enlightenment,tasn/enlightenment,tizenorg/platform.upstream.enlightenment,tizenorg/platform.upstream.enlightenment,FlorentRevest/Enlightenment,FlorentRevest/Enlightenment,rvandegrift/e,tasn/enlightenment,rvandegrift/e