V4L/DVB (11689): gspca - m5602-s5k4aa: Fixup the vflip/hflip

Ensure that the hflip and vflip is consistent when the sensor needs to
be vflip quirked or not.

Signed-off-by: Grégory Lardière <spmf2004-m560x@yahoo.fr>
Signed-off-by: Erik Andrén <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>