[media] friio-fe: remove get_frontend() callback

This driver doesn't support getting frontend information and
it only works in automatic mode.

So, let's remove get_frontend() and update the cache at
set_frontend().

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2016-02-04 10:01:05 -02:00
commit 6f1bd42612