dt-bindings: interrupt-controller: Convert snps,archs-intc to DT schema

Convert the ARC-HS incore interrupt controller binding to schema format.
It's a straight-forward conversion of the typical interrupt controller.

Link: https://lore.kernel.org/r/20250505144834.1292666-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Documentation/devicetree/bindings/interrupt-controller/snps,archs-intc.txt

@@ -1,22 +0,0 @@
-* ARC-HS incore Interrupt Controller (Provided by cores implementing ARCv2 ISA)
-
-Properties:
-
-- compatible: "snps,archs-intc"
-- interrupt-controller: This is an interrupt controller.
-- #interrupt-cells: Must be <1>.
-
-  Single Cell "interrupts" property of a device specifies the IRQ number
-  between 16 to 256
-
-  intc accessed via the special ARC AUX register interface, hence "reg" property
-  is not specified.
-
-Example:
-
-	intc: interrupt-controller {
-		compatible = "snps,archs-intc";
-		interrupt-controller;
-		#interrupt-cells = <1>;
-		interrupts = <16 17 18 19 20 21 22 23 24 25>;
-	};

Documentation/devicetree/bindings/interrupt-controller/snps,archs-intc.yaml

@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/snps,archs-intc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARC-HS incore Interrupt Controller
+
+maintainers:
+  - Vineet Gupta <vgupta@kernel.org>
+
+description:
+  ARC-HS incore Interrupt Controller provided by cores implementing ARCv2 ISA.
+  intc accessed via the special ARC AUX register interface, hence "reg" property
+  is not specified.
+
+properties:
+  compatible:
+    const: snps,archs-intc
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 1
+
+  interrupts:
+    description: List of IRQ numbers between 16 and 256
+    items:
+      items:
+        - minimum: 16
+          maximum: 256
+
+required:
+  - compatible
+  - interrupt-controller
+  - '#interrupt-cells'
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    interrupt-controller {
+        compatible = "snps,archs-intc";
+        interrupt-controller;
+        #interrupt-cells = <1>;
+        interrupts = <16>, <17>, <18>, <19>, <20>, <21>, <22>, <23>, <24>, <25>;
+    };