[media] xc5000: add set_config and other

Add one more radio input, usefull for tm6010
Add control output amplitude.
Add set_config function for configure tuner when TV card hasn't dvb part.

Signed-off-by: Beholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>