ASoC: ops: Check bounds for second channel in snd_soc_put_volsw_sx()

The bounds checks in snd_soc_put_volsw_sx() are only being applied to the
first channel, meaning it is possible to write out of bounds values to the
second channel in stereo controls. Add appropriate checks.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220511134137.169575-2-broonie@kernel.org


Signed-off-by: Mark Brown <broonie@kernel.org>