ASoC: dt-bindings: cs35l45: Cirrus Logic CS35L45 Smart Amp

This adds the schema binding for the Cirrus Logic CS35L45 Smart Amp
and associated header file.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220405135419.1230088-5-rf@opensource.cirrus.com


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