ASoC: convert Everest ES8316 binding to yaml

This patch converts Everest Semiconductor ES8316 low power audio
CODEC binding to DT schema.

Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200724155933.1040501-1-katsuhiro@katsuster.net


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