[media] em28xx: Fix tuner_type for Terratec Cinergy 200 USB

The card definition of the Terratec Cinergy 200 USB uses the
wrong tuner type. Therefore some channels are currently missing.
Attached patch fixes this problem.

Signed-off-by: Sascha Sommer <saschasommer@freenet.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>