V4L/DVB (3427): audmode and rxsubchans fixes (VIDIOC_G/S_TUNER)


- Audmode and rxsubchans fixes in msp3400, tuner, tvaudio and cx25840.
- msp3400 cleanups

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
7 files changed