dt-bindings: scm: Add compatible for IPQ9574

Add the scm compatible string for IPQ9574 SoC
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Poovendhan Selvaraj <quic_poovendh@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230216120012.28357-2-quic_poovendh@quicinc.com

Documentation/devicetree/bindings/firmware/qcom,scm.yaml

@@ -27,6 +27,7 @@ properties:
           - qcom,scm-ipq6018
           - qcom,scm-ipq806x
           - qcom,scm-ipq8074
+          - qcom,scm-ipq9574
           - qcom,scm-mdm9607
           - qcom,scm-msm8226
           - qcom,scm-msm8660