ASoC: mediatek: mt8186: Add machine support for max98357a

Add support for mt8186 with mt6366 and max98357a.

Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
Link: https://lore.kernel.org/r/20221228115756.28014-1-allen-kh.cheng@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>