dt-bindings: arm: hisilicon: add missing properties into cpuctrl.yaml

Add properties: #address-cells, #size-cells and ranges. Due to the
Hisilicon CPU controller node may contains child nodes, change the value
of "additionalProperties" from "false" to "type: object".

The corresponding examples are also added.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20201012061225.1597-11-thunder.leizhen@huawei.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/arm/hisilicon/controller/cpuctrl.yaml

@@ -21,9 +21,34 @@ properties:
   reg:
     maxItems: 1
 
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  ranges: true
+
 required:
   - compatible
   - reg
 
-additionalProperties: false
+additionalProperties:
+  type: object
+
+examples:
+  - |
+    cpuctrl@a22000 {
+        compatible = "hisilicon,cpuctrl";
+        #address-cells = <1>;
+        #size-cells = <1>;
+        reg = <0x00a22000 0x2000>;
+        ranges = <0 0x00a22000 0x2000>;
+
+        clock: clock@0 {
+            compatible = "hisilicon,hix5hd2-clock";
+            reg = <0 0x2000>;
+            #clock-cells = <1>;
+        };
+    };
 ...