V4L/DVB: cx18: Add a component video input to the PVR2100 and DVR3200H card entries

This is a guess at the proper configuration for component video on the Leadtek
PVR2100 and DVR3100 H.

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>