ASoC: cs42l84: Add new codec driver

The CS42L84 is a codec from Cirrus Logic found in Apple Silicon Macs.
The chip continues Apple's long tradition of compelling vendors to
spin out bespoke SKUs that are based on existing IP but made subtly
incompatible with the publicly available part. CS42L84 is very similar
to CS42L42, but has a different regmap.

Signed-off-by: Martin Povišer <povik+lin@cutebit.org>
Signed-off-by: Hector Martin <marcan@marcan.st>
Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Link: https://patch.msgid.link/20241020-cs42l84-v2-2-37ba2b6721d9@gmail.com


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