dt-bindings: watchdog: realtek,rtd1295-watchdog: convert txt to yaml

Convert txt file to yaml. Add maintainers from git blame.
Signed-off-by: Nik Bune <n2h9z4@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20231112162049.12633-1-n2h9z4@gmail.comSigned-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

Documentation/devicetree/bindings/watchdog/realtek,rtd119x.txt

-Realtek RTD1295 Watchdog
-========================
-
-Required properties:
-
-- compatible :  Should be "realtek,rtd1295-watchdog"
-- reg        :  Specifies the physical base address and size of registers
-- clocks     :  Specifies one clock input
-
-
-Example:
-
-	watchdog@98007680 {
-		compatible = "realtek,rtd1295-watchdog";
-		reg = <0x98007680 0x100>;
-		clocks = <&osc27M>;
-	};

Documentation/devicetree/bindings/watchdog/realtek,rtd1295-watchdog.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/realtek,rtd1295-watchdog.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Realtek RTD1295 Watchdog
+
+maintainers:
+  - Andreas Färber <afaerber@suse.de>
+
+allOf:
+  - $ref: watchdog.yaml#
+
+properties:
+  compatible:
+    const: realtek,rtd1295-watchdog
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    watchdog@98007680 {
+        compatible = "realtek,rtd1295-watchdog";
+        reg = <0x98007680 0x100>;
+        clocks = <&osc27M>;
+    };