V4L/DVB (13627): gspca - zc3xx: Set the quality for sensor tas5130c.

- setting the quality gives a better brightness

Reported-by: Benoit GIRARD <benoit.girard0@gmail.com>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>