ASoC: codecs: Fixed a spelling error in the function name

Change the function name aw88395_plack_event to aw88395_playback_event

Signed-off-by: Ben Yi <yijiangtao@awinic.com>
Signed-off-by: Weidong Wang <wangweidong.a@awinic.com>
Link: https://lore.kernel.org/r/20230213093649.22928-2-wangweidong.a@awinic.com


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