V4L/DVB (13358): stv090x: add an additional check for packet delineator lock...

V4L/DVB (13358): stv090x: add an additional check for packet delineator lock in stv090x_read_status in case of a tuned DVB-S2 signal

Signed-off-by: Andreas Regel <andreas.regel@gmx.de>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>