ASoC: dt-bindings: samsung,arndale: convert to dtschema

Convert the audio complex on Arndale boards with Samsung Exynos SoC to
DT schema format.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220129122430.45694-1-krzysztof.kozlowski@canonical.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/arndale.txt

-Audio Binding for Arndale boards
-
-Required properties:
-- compatible : Can be one of the following:
-		"samsung,arndale-rt5631",
-		"samsung,arndale-wm1811"
-
-- samsung,audio-cpu: The phandle of the Samsung I2S controller
-- samsung,audio-codec: The phandle of the audio codec
-
-Optional:
-- samsung,model: The name of the sound-card
-
-Arndale Boards has many audio daughter cards, one of them is
-rt5631/alc5631. Below example shows audio bindings for rt5631/
-alc5631 based codec.
-
-Example:
-
-sound {
-		compatible = "samsung,arndale-rt5631";
-
-		samsung,audio-cpu = <&i2s0>
-		samsung,audio-codec = <&rt5631>;
-};

Documentation/devicetree/bindings/sound/samsung,arndale.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/samsung,arndale.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Insignal Arndale boards audio complex
+
+maintainers:
+  - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+  - Sylwester Nawrocki <s.nawrocki@samsung.com>
+
+properties:
+  compatible:
+    enum:
+      - samsung,arndale-rt5631
+      - samsung,arndale-wm1811
+
+  samsung,audio-codec:
+    description: Phandle to the audio codec.
+    $ref: /schemas/types.yaml#/definitions/phandle
+
+  samsung,audio-cpu:
+    description: Phandle to the Samsung I2S controller.
+    $ref: /schemas/types.yaml#/definitions/phandle
+
+  samsung,model:
+    description: The user-visible name of this sound complex.
+    $ref: /schemas/types.yaml#/definitions/string
+
+required:
+  - compatible
+  - samsung,audio-codec
+  - samsung,audio-cpu
+
+additionalProperties: false
+
+examples:
+  - |
+    sound {
+        compatible = "samsung,arndale-rt5631";
+        samsung,audio-cpu = <&i2s0>;
+        samsung,audio-codec = <&rt5631>;
+    };