dt-bindings: interrupt-controller: Convert qca,ar7100-misc-intc to DT schema

Convert the Qualcomm Atheros ath79 Misc interrupt controller binding to
schema format.

Adjust the compatible values to match what's actually in use.

Link: https://lore.kernel.org/r/20250505144821.1292151-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Author: robherring

Documentation/devicetree/bindings/interrupt-controller/qca,ar7100-misc-intc.yaml

@@ -0,0 +1,52 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/qca,ar7100-misc-intc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Atheros AR7xxx/AR9XXX MISC interrupt controller
+
+maintainers:
+  - Alban Bedel <albeu@free.fr>
+  - Alexander Couzens <lynxis@fe80.eu>
+
+description:
+  The Qualcomm Atheros AR7xxx/AR9XXX MISC interrupt controller is a secondary
+  controller for lower priority interrupts.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: qca,ar9132-misc-intc
+          - const: qca,ar7100-misc-intc
+      - const: qca,ar7240-misc-intc
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 1
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-controller
+  - "#interrupt-cells"
+
+examples:
+  - |
+    interrupt-controller@18060010 {
+        compatible = "qca,ar9132-misc-intc", "qca,ar7100-misc-intc";
+        reg = <0x18060010 0x4>;
+        interrupts = <6>;
+        interrupt-controller;
+        #interrupt-cells = <1>;
+    };