ASoC: codecs: Add Richtek rtq9128 audio amplifier support

Add Richtek rtq9128 automotive audio amplifier.

Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Link: https://lore.kernel.org/r/1695181834-5809-3-git-send-email-cy_huang@richtek.com


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