ASoC: dt-bindings: tegra20-das: Convert to schema

Convert NVIDIA Tegra20 DAS (Digital Audio Switch) binding to schema.
Signed-off-by: Mohammad Shehar Yaar Tausif <sheharyaar48@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20240418163326.58365-1-sheharyaar48@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/nvidia,tegra20-das.txt

-NVIDIA Tegra 20 DAS (Digital Audio Switch) controller
-
-Required properties:
-- compatible : "nvidia,tegra20-das"
-- reg : Should contain DAS registers location and length
-
-Example:
-
-das@70000c00 {
-	compatible = "nvidia,tegra20-das";
-	reg = <0x70000c00 0x80>;
-};

Documentation/devicetree/bindings/sound/nvidia,tegra20-das.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nvidia,tegra20-das.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra 20 DAS (Digital Audio Switch) controller
+
+maintainers:
+  - Thierry Reding <treding@nvidia.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+  compatible:
+    const: nvidia,tegra20-das
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    bus {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        das@70000c00 {
+            compatible = "nvidia,tegra20-das";
+            reg = <0x70000c00 0x80>;
+        };
+    };
+...