ASoC: mt8192: Fix event generation for controls

ALSA controls put() operations should return 1 if the value changed and 0
if it remains the same, fix the mt8192 driver to do so.

Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230223-asoc-mt8192-quick-fixes-v1-2-9a85f90368e1@kernel.org


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