V4L/DVB (8987): cx88: Add support for the Hauppauge HVR4000 and HVR4000-LITE (S2) boards

Adding support for Hauppauge's cx88 S2 based products, based on the
cx24116 DVB-S2 demodulator.

Signed-off-by: Steven Toth <stoth@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>