[media] af9013: use .get_if_frequency() when possible

Get IF frequency from tuner if tuner provides it.

Remove TDA18271 and TDA18218 IF frequency hacks since both tuners provides .get_if_frequency().

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1 file changed