dt-bindings: pinctrl: qcom,pmic-mpp: clean up example

The Multi-Purpose Pin controller block is part of an SPMI PMIC (which in
turns sits on an SPMI bus) and uses a single value for the register
property that corresponds to its base address.

Clean up the example by adding a parent PMIC node with proper
'#address-cells' and '#size-cells' properties, dropping the incorrect
second register value, adding some newline separators and increasing the
indentation to four spaces.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231130172834.12653-1-johan+linaro@kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Author: jhovold

Documentation/devicetree/bindings/pinctrl/qcom,pmic-mpp.yaml

@@ -158,34 +158,40 @@ examples:
   - |
     #include <dt-bindings/pinctrl/qcom,pmic-mpp.h>
 
-    pm8841_mpp: mpps@a000 {
-      compatible = "qcom,pm8841-mpp", "qcom,spmi-mpp";
-      reg = <0xa000 0>;
-      gpio-controller;
-      #gpio-cells = <2>;
-      gpio-ranges = <&pm8841_mpp 0 0 4>;
-      gpio-line-names = "VDD_PX_BIAS", "WLAN_LED_CTRL",
-              "BT_LED_CTRL", "GPIO-F";
-      interrupt-controller;
-      #interrupt-cells = <2>;
-
-      pinctrl-names = "default";
-      pinctrl-0 = <&pm8841_default>;
-
-      mpp1-state {
-        pins = "mpp1";
-        function = "digital";
-        input-enable;
-        power-source = <PM8841_MPP_S3>;
-      };
-
-      default-state {
-        gpio-pins {
-          pins = "mpp1", "mpp2", "mpp3", "mpp4";
-          function = "digital";
-          input-enable;
-          power-source = <PM8841_MPP_S3>;
+    pmic {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pm8841_mpp: mpps@a000 {
+            compatible = "qcom,pm8841-mpp", "qcom,spmi-mpp";
+            reg = <0xa000>;
+
+            gpio-controller;
+            #gpio-cells = <2>;
+            gpio-ranges = <&pm8841_mpp 0 0 4>;
+            gpio-line-names = "VDD_PX_BIAS", "WLAN_LED_CTRL",
+                              "BT_LED_CTRL", "GPIO-F";
+            interrupt-controller;
+            #interrupt-cells = <2>;
+
+            pinctrl-names = "default";
+            pinctrl-0 = <&pm8841_default>;
+
+            mpp1-state {
+                pins = "mpp1";
+                function = "digital";
+                input-enable;
+                power-source = <PM8841_MPP_S3>;
+            };
+
+            default-state {
+                gpio-pins {
+                    pins = "mpp1", "mpp2", "mpp3", "mpp4";
+                    function = "digital";
+                    input-enable;
+                    power-source = <PM8841_MPP_S3>;
+                };
+            };
         };
-      };
     };
 ...