dt-bindings: power: qcom,rpmpd: Add SM4450 compatible

Document compatible for RPMh power domain controller on SM4450 Platform.

Signed-off-by: Ajit Pandey <quic_ajipan@quicinc.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250417-sm4450_rpmhpd-v1-1-361846750d3a@quicinc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Author: Ajit Pandey

Documentation/devicetree/bindings/power/qcom,rpmpd.yaml

@@ -50,6 +50,7 @@ properties:
           - qcom,sdx55-rpmhpd
           - qcom,sdx65-rpmhpd
           - qcom,sdx75-rpmhpd
+          - qcom,sm4450-rpmhpd
           - qcom,sm6115-rpmpd
           - qcom,sm6125-rpmpd
           - qcom,sm6350-rpmhpd