ASoC: dt-bindings: Add TDM controller bindings for StarFive JH7110

Add bindings for TDM driver which supports multi-channel audio playback
and capture on JH7110 platform.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Walker Chen <walker.chen@starfivetech.com>
Link: https://lore.kernel.org/r/20230526145402.450-2-walker.chen@starfivetech.com


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