Any control that sets FLAG_WRITE_ONLY should OR it with
FLAG_EXECUTE_ON_WRITE.

So we can keep the current meaning of WRITE_ONLY.
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>