ASoC: ops: Fix stereo change notifications in snd_soc_put_volsw_sx()

ASoC: ops: Fix stereo change notifications in snd_soc_put_volsw_sx()

commit 7f3d90a3519680dfa23e750f80bfdefc0f5eda4a upstream.

When writing out a stereo control we discard the change notification from
the first channel, meaning that events are only generated based on changes
to the second channel. Ensure that we report a change if either channel
has changed.

Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220201155629.120510-3-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>