dt-bindings:iio:potentiometer:microchip,mcp4131 txt to yaml conversion

This binding is very simple, but I think the very large number of
compatible values make it unsuitable for moving to trivial-devices.yaml.
Main change in the conversion was reordering the compatible list to
numerical order.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Slawomir Stepien <sst@poczta.fm>
Link: https://lore.kernel.org/r/20201031184854.745828-4-jic23@kernel.org

Documentation/devicetree/bindings/iio/potentiometer/mcp4131.txt

-* Microchip MCP413X/414X/415X/416X/423X/424X/425X/426X Digital Potentiometer
-  driver
-
-The node for this driver must be a child node of a SPI controller, hence
-all mandatory properties described in
-
-        Documentation/devicetree/bindings/spi/spi-bus.txt
-
-must be specified.
-
-Required properties:
-	- compatible:  	Must be one of the following, depending on the
-			model:
-			"microchip,mcp4131-502"
-			"microchip,mcp4131-103"
-			"microchip,mcp4131-503"
-			"microchip,mcp4131-104"
-			"microchip,mcp4132-502"
-			"microchip,mcp4132-103"
-			"microchip,mcp4132-503"
-			"microchip,mcp4132-104"
-			"microchip,mcp4141-502"
-			"microchip,mcp4141-103"
-			"microchip,mcp4141-503"
-			"microchip,mcp4141-104"
-			"microchip,mcp4142-502"
-			"microchip,mcp4142-103"
-			"microchip,mcp4142-503"
-			"microchip,mcp4142-104"
-			"microchip,mcp4151-502"
-			"microchip,mcp4151-103"
-			"microchip,mcp4151-503"
-			"microchip,mcp4151-104"
-			"microchip,mcp4152-502"
-			"microchip,mcp4152-103"
-			"microchip,mcp4152-503"
-			"microchip,mcp4152-104"
-			"microchip,mcp4161-502"
-			"microchip,mcp4161-103"
-			"microchip,mcp4161-503"
-			"microchip,mcp4161-104"
-			"microchip,mcp4162-502"
-			"microchip,mcp4162-103"
-			"microchip,mcp4162-503"
-			"microchip,mcp4162-104"
-			"microchip,mcp4231-502"
-			"microchip,mcp4231-103"
-			"microchip,mcp4231-503"
-			"microchip,mcp4231-104"
-			"microchip,mcp4232-502"
-			"microchip,mcp4232-103"
-			"microchip,mcp4232-503"
-			"microchip,mcp4232-104"
-			"microchip,mcp4241-502"
-			"microchip,mcp4241-103"
-			"microchip,mcp4241-503"
-			"microchip,mcp4241-104"
-			"microchip,mcp4242-502"
-			"microchip,mcp4242-103"
-			"microchip,mcp4242-503"
-			"microchip,mcp4242-104"
-			"microchip,mcp4251-502"
-			"microchip,mcp4251-103"
-			"microchip,mcp4251-503"
-			"microchip,mcp4251-104"
-			"microchip,mcp4252-502"
-			"microchip,mcp4252-103"
-			"microchip,mcp4252-503"
-			"microchip,mcp4252-104"
-			"microchip,mcp4261-502"
-			"microchip,mcp4261-103"
-			"microchip,mcp4261-503"
-			"microchip,mcp4261-104"
-			"microchip,mcp4262-502"
-			"microchip,mcp4262-103"
-			"microchip,mcp4262-503"
-			"microchip,mcp4262-104"
-
-Example:
-mcp4131: mcp4131@0 {
-	compatible = "mcp4131-502";
-	reg = <0>;
-	spi-max-frequency = <500000>;
-};

Documentation/devicetree/bindings/iio/potentiometer/microchip,mcp4131.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/potentiometer/microchip,mcp4131.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip MCP413X/414X/415X/416X/423X/424X/425X/426X Digital Potentiometer
+
+maintainers:
+  - Slawomir Stepien <sst@poczta.fm>
+
+properties:
+  compatible:
+    enum:
+      - microchip,mcp4131-103
+      - microchip,mcp4131-104
+      - microchip,mcp4131-502
+      - microchip,mcp4131-503
+      - microchip,mcp4132-103
+      - microchip,mcp4132-104
+      - microchip,mcp4132-502
+      - microchip,mcp4132-503
+      - microchip,mcp4141-103
+      - microchip,mcp4141-104
+      - microchip,mcp4141-502
+      - microchip,mcp4141-503
+      - microchip,mcp4142-103
+      - microchip,mcp4142-104
+      - microchip,mcp4142-502
+      - microchip,mcp4142-503
+      - microchip,mcp4151-103
+      - microchip,mcp4151-104
+      - microchip,mcp4151-502
+      - microchip,mcp4151-503
+      - microchip,mcp4152-103
+      - microchip,mcp4152-104
+      - microchip,mcp4152-502
+      - microchip,mcp4152-503
+      - microchip,mcp4161-103
+      - microchip,mcp4161-104
+      - microchip,mcp4161-502
+      - microchip,mcp4161-503
+      - microchip,mcp4162-103
+      - microchip,mcp4162-104
+      - microchip,mcp4162-502
+      - microchip,mcp4162-503
+      - microchip,mcp4231-103
+      - microchip,mcp4231-104
+      - microchip,mcp4231-502
+      - microchip,mcp4231-503
+      - microchip,mcp4232-103
+      - microchip,mcp4232-104
+      - microchip,mcp4232-502
+      - microchip,mcp4232-503
+      - microchip,mcp4241-103
+      - microchip,mcp4241-104
+      - microchip,mcp4241-502
+      - microchip,mcp4241-503
+      - microchip,mcp4242-103
+      - microchip,mcp4242-104
+      - microchip,mcp4242-502
+      - microchip,mcp4242-503
+      - microchip,mcp4251-103
+      - microchip,mcp4251-104
+      - microchip,mcp4251-502
+      - microchip,mcp4251-503
+      - microchip,mcp4252-103
+      - microchip,mcp4252-104
+      - microchip,mcp4252-502
+      - microchip,mcp4252-503
+      - microchip,mcp4261-103
+      - microchip,mcp4261-104
+      - microchip,mcp4261-502
+      - microchip,mcp4261-503
+      - microchip,mcp4262-103
+      - microchip,mcp4262-104
+      - microchip,mcp4262-502
+      - microchip,mcp4262-503
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        potentiometer@0 {
+            compatible = "mcp4131-502";
+            reg = <0>;
+            spi-max-frequency = <500000>;
+        };
+    };
+...