dt-bindings:iio:dac:maxim,ds4424 yaml conversion

Simple conversion of this straight forward binding.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Ismail H. Kose <ihkose@gmail.com>
Link: https://lore.kernel.org/r/20201031134110.724233-19-jic23@kernel.orgSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Documentation/devicetree/bindings/iio/dac/ds4424.txt

-Maxim Integrated DS4422/DS4424 7-bit Sink/Source Current DAC Device Driver
-
-Datasheet publicly available at:
-https://datasheets.maximintegrated.com/en/ds/DS4422-DS4424.pdf
-
-Required properties:
-	- compatible: Should be one of
-		maxim,ds4422
-		maxim,ds4424
-	- reg: Should contain the DAC I2C address
-
-Optional properties:
-	- vcc-supply: Power supply is optional. If not defined, driver will ignore it.
-
-Example:
-	ds4224@10 {
-		compatible = "maxim,ds4424";
-		reg = <0x10>; /* When A0, A1 pins are ground */
-		vcc-supply = <&vcc_3v3>;
-	};

Documentation/devicetree/bindings/iio/dac/maxim,ds4424.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dac/maxim,ds4424.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim Integrated DS4422/DS4424 7-bit Sink/Source Current DAC
+
+maintainers:
+  - Ismail Kose <ihkose@gmail.com>
+
+description: |
+  Datasheet publicly available at:
+  https://datasheets.maximintegrated.com/en/ds/DS4422-DS4424.pdf
+
+properties:
+  compatible:
+    enum:
+      - maxim,ds4422
+      - maxim,ds4424
+
+  reg:
+    maxItems: 1
+
+  vcc-supply: true
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        dac@10 {
+            compatible = "maxim,ds4424";
+            reg = <0x10>; /* When A0, A1 pins are ground */
+            vcc-supply = <&vcc_3v3>;
+        };
+    };
+...