dt-bindings: media: convert Mediatek consumer IR to the json-schema

This helps validating DTS files. Introduced changes:
1. Reworded title
2. Made "bus" clock required on MT7623 as well
3. Added required #include-s and adjusted "reg" & clocks in example
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

Documentation/devicetree/bindings/media/mediatek,mt7622-cir.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/mediatek,mt7622-cir.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek Consumer Infrared Receiver on-SoC Controller
+
+maintainers:
+  - Sean Wang <sean.wang@mediatek.com>
+
+allOf:
+  - $ref: rc.yaml#
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt7622-cir
+      - mediatek,mt7623-cir
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: clk
+      - const: bus
+
+required:
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/mt2701-clk.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    ir@10013000 {
+        compatible = "mediatek,mt7623-cir";
+        reg = <0x10013000 0x1000>;
+        interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_LOW>;
+        clocks = <&infracfg CLK_INFRA_IRRX>, <&topckgen CLK_TOP_AXI_SEL>;
+        clock-names = "clk", "bus";
+        linux,rc-map-name = "rc-rc6-mce";
+    };

Documentation/devicetree/bindings/media/mtk-cir.txt

-Device-Tree bindings for Mediatek consumer IR controller
-found in Mediatek SoC family
-
-Required properties:
-- compatible	    : Should be
-			"mediatek,mt7623-cir": for MT7623 SoC
-			"mediatek,mt7622-cir": for MT7622 SoC
-- clocks	    : list of clock specifiers, corresponding to
-		      entries in clock-names property;
-- clock-names	    : should contain
-			- "clk" entries: for MT7623 SoC
-			- "clk", "bus" entries: for MT7622 SoC
-- interrupts	    : should contain IR IRQ number;
-- reg		    : should contain IO map address for IR.
-
-Optional properties:
-- linux,rc-map-name : see rc.txt file in the same directory.
-
-Example:
-
-cir: cir@10013000 {
-	compatible = "mediatek,mt7623-cir";
-	reg = <0 0x10013000 0 0x1000>;
-	interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_LOW>;
-	clocks = <&infracfg CLK_INFRA_IRRX>;
-	clock-names = "clk";
-	linux,rc-map-name = "rc-rc6-mce";
-};