ASoC: dt-bindings: qcom,q6apm: Add SM8450 bedais node

On SM8450 and SC8280XP, the Q6APM is a bit different:
1. It is used as a platform DAI link, so it needs #sound-dai-cells.
2. It has two DAI children, so add new "bedais" node.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20221115120235.167812-12-krzysztof.kozlowski@linaro.org


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