dt-bindings: leds: irled: pwm-ir-tx: convert to DT schema

Convert the PWM IR LED bindings to DT schema.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221204104323.117974-2-krzysztof.kozlowski@linaro.orgSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/leds/irled/pwm-ir-tx.txt

-Device tree bindings for IR LED connected through pwm pin which is used as
-remote controller transmitter.
-
-Required properties:
-	- compatible: should be "pwm-ir-tx".
-	- pwms : PWM property to point to the PWM device (phandle)/port (id)
-	  and to specify the period time to be used: <&phandle id period_ns>;
-
-Example:
-	irled {
-		compatible = "pwm-ir-tx";
-		pwms = <&pwm0 0 10000000>;
-	};

Documentation/devicetree/bindings/leds/irled/pwm-ir-tx.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/irled/pwm-ir-tx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: IR LED connected through PWM pin
+
+maintainers:
+  - Sean Young <sean@mess.org>
+
+description:
+  IR LED connected through PWM pin which is used as remote controller
+  transmitter.
+
+properties:
+  compatible:
+    const: pwm-ir-tx
+
+  pwms:
+    maxItems: 1
+
+required:
+  - compatible
+  - pwms
+
+additionalProperties: false
+
+examples:
+  - |
+    irled {
+        compatible = "pwm-ir-tx";
+        pwms = <&pwm0 0 10000000>;
+    };

MAINTAINERS

@@ -16722,6 +16722,7 @@ PWM IR Transmitter
 M:	Sean Young <sean@mess.org>
 L:	linux-media@vger.kernel.org
 S:	Maintained
+F:	Documentation/devicetree/bindings/leds/irled/pwm-ir-tx.yaml
 F:	drivers/media/rc/pwm-ir-tx.c
 
 PWM SUBSYSTEM