V4L/DVB (11455): gspca - m5602-ov9650: Improve the vflip quirk handling.

Regardless of the actual sensor orientation vflip = 0 is normal, and vflip = 1 is upside down. This patch makes that happen

Signed-off-by: Erik Andr?n <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>