ASoC: codec: Add driver for JZ4760 internal codec

Add support for the internal codec found in the JZ4760 SoC from Ingenic.

Signed-off-by: Christophe Branchereau <cbranchereau@gmail.com>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20210123140958.12895-3-paul@crapouillou.net


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