dt-bindings: power: rpmpd: Add MSM8226 to rpmpd binding

Add compatible and constants for the power domains exposed by the
MSM8226 RPM.
Signed-off-by: NLuca Weiss <luca@z3ntu.xyz>
Signed-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220220223004.507739-1-luca@z3ntu.xyz

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

@@ -17,6 +17,7 @@ properties:
   compatible:
     enum:
       - qcom,mdm9607-rpmpd
+      - qcom,msm8226-rpmpd
       - qcom,msm8916-rpmpd
       - qcom,msm8939-rpmpd
       - qcom,msm8953-rpmpd

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

@@ -139,6 +139,11 @@
 #define MDM9607_VDDMX_AO	4
 #define MDM9607_VDDMX_VFL	5
 
+/* MSM8226 Power Domain Indexes */
+#define MSM8226_VDDCX		0
+#define MSM8226_VDDCX_AO	1
+#define MSM8226_VDDCX_VFC	2
+
 /* MSM8939 Power Domains */
 #define MSM8939_VDDMDCX		0
 #define MSM8939_VDDMDCX_AO	1