V4L/DVB (13441): ivtv: Added FM radio support to Avermedia AVerTV MCE 116 Plus card

Signed-off-by: Aleksandr V. Piskunov <alexandr.v.piskunov@gmail.com>
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>