[media] uvcvideo: Detect The Imaging Source CCD cameras by vendor and product ID

The Imaging Source CCD cameras use a vendor specific interface class
even though they are actually UVC compliant.

Signed-off-by: Arne Caspari <arne@unicap-imaging.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>