dt-bindings: i2c: Convert arm,i2c-versatile to DT schema

Convert the arm,i2c-versatile binding to DT schema format.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
[wsa: fixed "arn" typo spotted by Krzysztof]
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Documentation/devicetree/bindings/i2c/arm,i2c-versatile.yaml

+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/arm,i2c-versatile.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: I2C Controller on ARM Ltd development platforms
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+allOf:
+  - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+  compatible:
+    const: arm,versatile-i2c
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+...
+

Documentation/devicetree/bindings/i2c/i2c-versatile.txt

-i2c Controller on ARM Versatile platform:
-
-Required properties:
-- compatible : Must be "arm,versatile-i2c";
-- reg
-- #address-cells = <1>;
-- #size-cells = <0>;
-
-Optional properties:
-- Child nodes conforming to i2c bus binding

MAINTAINERS

@@ -1520,7 +1520,7 @@ F:	Documentation/devicetree/bindings/arm/arm,versatile.yaml
 F:	Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml
 F:	Documentation/devicetree/bindings/auxdisplay/arm,versatile-lcd.yaml
 F:	Documentation/devicetree/bindings/clock/arm,syscon-icst.yaml
-F:	Documentation/devicetree/bindings/i2c/i2c-versatile.txt
+F:	Documentation/devicetree/bindings/i2c/arm,i2c-versatile.yaml
 F:	Documentation/devicetree/bindings/interrupt-controller/arm,versatile-fpga-irq.txt
 F:	Documentation/devicetree/bindings/mtd/mtd-physmap.yaml
 F:	arch/arm/boot/dts/arm-realview-*