 Bugfix: e xkbswitch: Disable both up and down buttons when there is only one configuration.
 Bugfix: e xkbswitch: Disable both up and down buttons when there is only one configuration.

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