Switch off all ADC (max 4) with first init, we control it
when starting/stopping streaming.
Signed-off-by: NVolokh Konstantin <volokh84@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>