V4L/DVB: ngene: Adapt to current frontend drivers

Adapt to current stv090x + stv6110 drivers.

[mchehab@redhat.com: removed compilation hack added by me on a prev patch]
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>