Some cards uses cx24116 LNB_DC pin for LNB power control,
some not uses, some uses it different way, like HVR-4000.

Tested-by : Edgar Hucek <gimli@dark-green.com>
Signed-off-by: Igor M. Liplianin <liplianin@me.by>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>