V4L/DVB (9395): Add initial support for two KNC1 DVB-S2 boards

Add initial support for:
* KNC1 DVB-S2 Plus
* KNC1 DVB-S2 OEM (known as Satelco DVB-S2)

Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>