dt-bindings: power: rpmpd: Add SC8180X to rpmpd binding

Add compatible and constants for the power domains exposed by the RPMH
in the Qualcomm SC8180X platform.

Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210120225037.1611353-1-bjorn.andersson@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

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

@@ -26,6 +26,7 @@ properties:
       - qcom,sdm660-rpmpd
       - qcom,sc7180-rpmhpd
       - qcom,sc7280-rpmhpd
+      - qcom,sc8180x-rpmhpd
       - qcom,sdm845-rpmhpd
       - qcom,sdx55-rpmhpd
       - qcom,sm8150-rpmhpd

include/dt-bindings/power/qcom-rpmpd.h

@@ -81,6 +81,19 @@
 #define SC7280_LCX	7
 #define SC7280_MSS	8
 
+/* SC8180X Power Domain Indexes */
+#define SC8180X_CX	0
+#define SC8180X_CX_AO	1
+#define SC8180X_EBI	2
+#define SC8180X_GFX	3
+#define SC8180X_LCX	4
+#define SC8180X_LMX	5
+#define SC8180X_MMCX	6
+#define SC8180X_MMCX_AO	7
+#define SC8180X_MSS	8
+#define SC8180X_MX	9
+#define SC8180X_MX_AO	10
+
 /* SDM845 Power Domain performance levels */
 #define RPMH_REGULATOR_LEVEL_RETENTION	16
 #define RPMH_REGULATOR_LEVEL_MIN_SVS	48