[media] media: coda: add horizontal / vertical flipping support

The hardware can also rotate in 90° steps, but there is no
corresponding V4L2_CID defined yet.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>