V4L/DVB (9508): ivtv: enable tuner support for Yuan PG600-2

The Yuan PG600-2 has a working tuner, so this can be enabled.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>