[media] Add support for downloading the firmware of the Terratec Cinergy HTC Stick HD's firmware

As of June 2012 it uses the same firmware as the Hauppauge WinTV HVR 930C.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>