dt-bindings: power: rpmpd: Add MSM8916 RPM power domains

MSM8916 has two RPM power domains: VDDCX and VDDMX.
Add the device tree bindings to manage them through rpmpd.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20200916104135.25085-3-stephan@gerhold.netSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

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

@@ -16,6 +16,7 @@ description:
 properties:
   compatible:
     enum:
+      - qcom,msm8916-rpmpd
       - qcom,msm8939-rpmpd
       - qcom,msm8976-rpmpd
       - qcom,msm8996-rpmpd

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

@@ -74,6 +74,13 @@
 #define MSM8939_VDDMX		6
 #define MSM8939_VDDMX_AO	7
 
+/* MSM8916 Power Domain Indexes */
+#define MSM8916_VDDCX		0
+#define MSM8916_VDDCX_AO	1
+#define MSM8916_VDDCX_VFC	2
+#define MSM8916_VDDMX		3
+#define MSM8916_VDDMX_AO	4
+
 /* MSM8976 Power Domain Indexes */
 #define MSM8976_VDDCX		0
 #define MSM8976_VDDCX_AO	1