dt-bindings: hisilicon: Merge hi3620-clock into hisilicon,sysctrl binding

The hi3620-clock binding is simple and always a child of the
"hisilicon,sysctrl" node, so just add it into the hisilicon,sysctrl
binding and drop the old txt binding.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

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

@@ -82,6 +82,23 @@ properties:
 
   ranges: true
 
+patternProperties:
+  '^clock@':
+    type: object
+    additionalProperties: false
+
+    properties:
+      compatible:
+        enum:
+          - hisilicon,hi3620-clock
+          - hisilicon,hi3620-mmc-clock
+
+      reg:
+        maxItems: 1
+
+      '#clock-cells':
+        const: 1
+
 required:
   - compatible
   - reg

Documentation/devicetree/bindings/clock/hi3620-clock.txt

-* Hisilicon Hi3620 Clock Controller
-
-The Hi3620 clock controller generates and supplies clock to various
-controllers within the Hi3620 SoC.
-
-Required Properties:
-
-- compatible: should be one of the following.
-  - "hisilicon,hi3620-clock" - controller compatible with Hi3620 SoC.
-  - "hisilicon,hi3620-mmc-clock" - controller specific for Hi3620 mmc.
-
-- reg: physical base address of the controller and length of memory mapped
-  region.
-
-- #clock-cells: should be 1.
-
-Each clock is assigned an identifier and client nodes use this identifier
-to specify the clock which they consume.
-
-All these identifier could be found in <dt-bindings/clock/hi3620-clock.h>.