ASoC: dt-bindings: qcom,q6prm: Split to separate schema

The APR/GPR bindings with services got complicated so move out the Q6PRM
service to its own binding.  Previously the compatible was documented in
qcom,apr.yaml.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20221115120235.167812-9-krzysztof.kozlowski@linaro.org


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