[media] drivers:media:dvb: add USB PIDs for Elgato EyeTV Sat

Adds USB PIDs for the Elgato EyeTV Sat device.
This device is a clone of the Terratec S7.

Signed-off-by: Sam Doshi <sam@metal-fish.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>