dt-bindings: power: qcom,rpmpd: Add compatible for sdx75

Add a compatible string for power domains in sdx75.
Signed-off-by: Rohit Agarwal <quic_rohiagar@quicinc.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/1690803007-8640-2-git-send-email-quic_rohiagar@quicinc.comSigned-off-by: Bjorn Andersson <andersson@kernel.org>

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

@@ -41,6 +41,7 @@ properties:
       - qcom,sdm845-rpmhpd
       - qcom,sdx55-rpmhpd
       - qcom,sdx65-rpmhpd
+      - qcom,sdx75-rpmhpd
       - qcom,sm6115-rpmpd
       - qcom,sm6125-rpmpd
       - qcom,sm6350-rpmhpd