ASoC: max98373: Convert to use GPIO descriptors

Instead of relying on legacy interfaces, convert the driver to
use GPIO descriptors. This is a straight-forward conversion,
we support also sdw devices providing GPIO descriptor tables
if they so desire.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230825-descriptors-asoc-max-v1-3-b212292b2f08@linaro.org


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