V4L/DVB (9874): gspca - ov534: Explicitly initialize frame format.

Set frame format registers 0x0a and 0x0b to explicit values
rather than relying on reset-time defaults.

Signed-off-by: Jim Paris <jim@jtan.com>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>