dt-bindings: watchdog: migrate mt7621 text bindings to YAML

Soc Mt7621 Watchdog bindings used text format, so migrate them to YAML.

Reviewed-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Sergio Paracuellos <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>

Author: paraka

Documentation/devicetree/bindings/watchdog/mediatek,mt7621-wdt.yaml

@@ -0,0 +1,33 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/mediatek,mt7621-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ralink Watchdog Timers
+
+maintainers:
+  - Sergio Paracuellos <[email protected]>
+
+allOf:
+  - $ref: watchdog.yaml#
+
+properties:
+  compatible:
+    const: mediatek,mt7621-wdt
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    watchdog@100 {
+      compatible = "mediatek,mt7621-wdt";
+      reg = <0x100 0x100>;
+    };