ASoC: cs8427: fix spdif cs-bits kcontrol to put changes properly

- kcontrol implementing put for spdif codec was not setting
  c-bits propely and was missing to update the same, fixed
  the condition for same.
  Because of this the channel status was not reflected properly
  and sometimes the stream over spdif was wrongly interpreted.

Change-Id: I702edeadfa227749e1a3ba6374060b898ffe7cd3
Signed-off-by: Dhananjay Kumar <dhakumar@codeaurora.org>
Merge "ASoC: cs8427: fix spdif cs-bits kcontrol to put changes properly"