[media] gspca_stv06xx: Disable flip controls for vv6410 sensor

Disable the hardware VFLIP and HFLIP controls for now as we lack a
mechanism to adjust the frame offset, thus rending a bayerimage not
compliant with the announced format.

Signed-off-by: Erik Andrén <erik.andren@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>