dt-bindings:iio:potentiometer:adi,ad5272 yaml conversion

Simple direct conversion from txt to yaml as part of a general aim of
converting all IIO bindings to this machine readable format.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Phil Reid <preid@electromag.com.au>
Cc: Phil Reid <preid@electromag.com.au>
Link: https://lore.kernel.org/r/20201031184854.745828-3-jic23@kernel.org

Documentation/devicetree/bindings/iio/potentiometer/ad5272.txt

-* Analog Devices AD5272 digital potentiometer
-
-The node for this device must be a child node of a I2C controller, hence
-all mandatory properties for your controller must be specified. See directory:
-
-        Documentation/devicetree/bindings/i2c
-
-for more details.
-
-Required properties:
-	- compatible:  	Must be one of the following, depending on the model:
-			adi,ad5272-020
-			adi,ad5272-050
-			adi,ad5272-100
-			adi,ad5274-020
-			adi,ad5274-100
-
-Optional properties:
- - reset-gpios: GPIO specification for the RESET input. This is an
-		active low signal to the AD5272.
-
-Example:
-ad5272: potentiometer@2f {
-	reg = <0x2F>;
-	compatible = "adi,ad5272-020";
-	reset-gpios = <&gpio3 6 GPIO_ACTIVE_HIGH>;
-};

Documentation/devicetree/bindings/iio/potentiometer/adi,ad5272.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/potentiometer/adi,ad5272.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD5272 digital potentiometer
+
+maintainers:
+  - Phil Reid <preid@electromag.com.au>
+
+description: |
+  Datasheet: https://www.analog.com/en/products/ad5272.html
+
+properties:
+  compatible:
+    enum:
+      - adi,ad5272-020
+      - adi,ad5272-050
+      - adi,ad5272-100
+      - adi,ad5274-020
+      - adi,ad5274-100
+
+  reg:
+    maxItems: 1
+
+  reset-gpios:
+    description:
+      Active low signal to the AD5272 RESET input.
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        potentiometer@2f {
+            compatible = "adi,ad5272-020";
+            reg = <0x2F>;
+            reset-gpios = <&gpio3 6 GPIO_ACTIVE_LOW>;
+        };
+    };
+...