dt-bindings: clock: intel,stratix10: convert to dtschema

Convert the Intel Stratix 10 clock controller bindings to DT schema format.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: NDinh Nguyen <dinguyen@kernel.org>

Documentation/devicetree/bindings/clock/intc_stratix10.txt

-Device Tree Clock bindings for Intel's SoCFPGA Stratix10 platform
-
-This binding uses the common clock binding[1].
-
-[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
-
-Required properties:
-- compatible : shall be
-	"intel,stratix10-clkmgr"
-
-- reg : shall be the control register offset from CLOCK_MANAGER's base for the clock.
-
-- #clock-cells : from common clock binding, shall be set to 1.
-
-Example:
-	clkmgr: clock-controller@ffd10000 {
-		compatible = "intel,stratix10-clkmgr";
-		reg = <0xffd10000 0x1000>;
-		#clock-cells = <1>;
-	};

Documentation/devicetree/bindings/clock/intel,stratix10.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/intel,stratix10.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intel SoCFPGA Stratix10 platform clock controller binding
+
+maintainers:
+  - Dinh Nguyen <dinguyen@kernel.org>
+
+properties:
+  compatible:
+    const: intel,stratix10-clkmgr
+
+  '#clock-cells':
+    const: 1
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    clock-controller@ffd10000 {
+        compatible = "intel,stratix10-clkmgr";
+        reg = <0xffd10000 0x1000>;
+        #clock-cells = <1>;
+    };