ASoC: dt-bindings: samsung,tm2: use common sound card

Reference the common sound card properties and deprecate the
custom "samsung,audio-routing" in favor of generic one.  This allows to
remove "model" property and make the binding closer to other sounds
cards.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230810063300.20151-6-krzysztof.kozlowski@linaro.org


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