dt-bindings: power: reset: qcom-pon: define pm8941-pon

On PM8941 pon doesn't store the reset reason. However we still need the
wrapping node for pwrkey and resin nodes. Add bindings for pm8941-pon
device.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

Documentation/devicetree/bindings/power/reset/qcom,pon.yaml

@@ -19,6 +19,7 @@ properties:
   compatible:
     enum:
       - qcom,pm8916-pon
+      - qcom,pm8941-pon
       - qcom,pms405-pon
       - qcom,pm8998-pon
       - qcom,pmk8350-pon
@@ -74,6 +75,21 @@ allOf:
         reg-names:
           items:
             - const: pon
+
+    # Special case for pm8941, which doesn't store reset mode
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: qcom,pm8941-pon
+    then:
+      properties:
+        reg:
+          maxItems: 1
+        reg-names:
+          items:
+            - const: pon
+
   - if:
       properties:
         compatible: