[media] stv090x: set status bits when there is no lock

Currently, the stv090x driver only set the status bits to SCVYL when
there is a lock. This patch set the right bits even if there is no lock.

Signed-off-by: Guy Martin <gmsoft@tuxicoman.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>