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/[e-mail]
Signed-off-by: Rob Herring (Arm) <[e-mail]>

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

···
+# 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 <[e-mail]>
+  - Alexander Couzens <[e-mail]>
+
+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>;
+    };

Documentation/devicetree/bindings/interrupt-controller/qca,ath79-misc-intc.txt

···
-Binding for Qualcomm Atheros AR7xxx/AR9XXX MISC interrupt controller
-
-The MISC interrupt controller is a secondary controller for lower priority
-interrupt.
-
-Required Properties:
-- compatible: has to be "qca,<soctype>-cpu-intc", "qca,ar7100-misc-intc" or
-  "qca,<soctype>-cpu-intc", "qca,ar7240-misc-intc"
-- reg: Base address and size of the controllers memory area
-- interrupts: Interrupt specifier for the controllers interrupt.
-- interrupt-controller : Identifies the node as an interrupt controller
-- #interrupt-cells : Specifies the number of cells needed to encode interrupt
-		     source, should be 1
-
-Compatible fallback depends on the SoC. Use ar7100 for ar71xx and ar913x,
-use ar7240 for all other SoCs.
-
-Please refer to interrupts.txt in this directory for details of the common
-Interrupt Controllers bindings used by client devices.
-
-Example:
-
-	interrupt-controller@18060010 {
-		compatible = "qca,ar9132-misc-intc", "qca,ar7100-misc-intc";
-		reg = <0x18060010 0x4>;
-
-		interrupt-parent = <&cpuintc>;
-		interrupts = <6>;
-
-		interrupt-controller;
-		#interrupt-cells = <1>;
-	};
-
-Another example:
-
-	interrupt-controller@18060010 {
-		compatible = "qca,ar9331-misc-intc", qca,ar7240-misc-intc";
-		reg = <0x18060010 0x4>;
-
-		interrupt-parent = <&cpuintc>;
-		interrupts = <6>;
-
-		interrupt-controller;
-		#interrupt-cells = <1>;
-	};