ASoC: dt-bindings: wlf,wm8524: Convert to json-schema

Convert the Wolfson WM8524 24-bit 192KHz Stereo DAC device tree
binding documentation to json-schema.
Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230227091938.1671416-1-chancel.liu@nxp.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/wlf,wm8524.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/wlf,wm8524.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Wolfson WM8524 24-bit 192KHz Stereo DAC
+
+maintainers:
+  - patches@opensource.cirrus.com
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    const: wlf,wm8524
+
+  "#sound-dai-cells":
+    const: 0
+
+  wlf,mute-gpios:
+    maxItems: 1
+    description:
+      a GPIO spec for the MUTE pin.
+
+required:
+  - compatible
+  - wlf,mute-gpios
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    wm8524: codec {
+        compatible = "wlf,wm8524";
+        wlf,mute-gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
+    };

Documentation/devicetree/bindings/sound/wm8524.txt

-WM8524 audio CODEC
-
-This device does not use I2C or SPI but a simple Hardware Control Interface.
-
-Required properties:
-
-  - compatible : "wlf,wm8524"
-
-  - wlf,mute-gpios: a GPIO spec for the MUTE pin.
-
-Example:
-
-wm8524: codec {
-	compatible = "wlf,wm8524";
-	wlf,mute-gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
-};