ASoC: codecs: adau1373: drop patform_data

struct adau1373_platform_data" was not being used by any platform.
Hence, drop it and move to firmware based support. All the
configurations quirks present in the platform_data are now supported as
firmware properties.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20241028-adau1373-shutdown-v2-3-647f56bbd182@analog.com


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