The left speaker of max98373 uses spk_r_endpoint, and right
speaker uses spk_l_endpoint, this is obviously wrong.

This patch corrects the endpoints for max98373 codec.
Signed-off-by: Chao Song <chao.song@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220406192341.271465-1-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>