ASoC: mediatek: mt8183: support machine driver with rt1015p

Supports machine driver with rt1015p ("mt8183_mt6358_ts3a227_rt1015p").
Embeds in the existing mt8183-mt6358-ts3a227-max98357.c because they
share most of the code.

Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20210311033151.1818603-3-tzungbi@google.com


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