dt-bindings: interrupt-controller: Convert google,goldfish-pic to DT schema

Convert the Google Goldfish PIC interrupt controller binding to schema
format. It's a straight-forward conversion of the typical interrupt
controller.

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Rob Herring (Arm) <[e-mail]>

Documentation/devicetree/bindings/interrupt-controller/google,goldfish-pic.txt

···
-Android Goldfish PIC
-
-Android Goldfish programmable interrupt device used by Android
-emulator.
-
-Required properties:
-
-- compatible : should contain "google,goldfish-pic"
-- reg        : <registers mapping>
-- interrupts : <interrupt mapping>
-
-Example for mips when used in cascade mode:
-
-        cpuintc {
-                #interrupt-cells = <0x1>;
-                #address-cells = <0>;
-                interrupt-controller;
-                compatible = "mti,cpu-interrupt-controller";
-        };
-
-        interrupt-controller@1f000000 {
-                compatible = "google,goldfish-pic";
-                reg = <0x1f000000 0x1000>;
-
-                interrupt-controller;
-                #interrupt-cells = <0x1>;
-
-                interrupt-parent = <&cpuintc>;
-                interrupts = <0x2>;
-        };

Documentation/devicetree/bindings/interrupt-controller/google,goldfish-pic.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/google,goldfish-pic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Android Goldfish PIC
+
+maintainers:
+  - Miodrag Dinic <[e-mail]>
+
+description:
+  Android Goldfish programmable interrupt device used by Android emulator.
+
+properties:
+  compatible:
+    const: google,goldfish-pic
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-controller
+  - '#interrupt-cells'
+
+examples:
+  - |
+    interrupt-controller@1f000000 {
+        compatible = "google,goldfish-pic";
+        reg = <0x1f000000 0x1000>;
+        interrupt-controller;
+        #interrupt-cells = <1>;
+        interrupts = <2>;
+    };
+
+additionalProperties: false

MAINTAINERS

···
 ANDROID GOLDFISH PIC DRIVER
 M:	Miodrag Dinic <[e-mail]>
 S:	Supported
-F:	Documentation/devicetree/bindings/interrupt-controller/google,goldfish-pic.txt
+F:	Documentation/devicetree/bindings/interrupt-controller/google,goldfish-pic.yaml
 F:	drivers/irqchip/irq-goldfish-pic.c
 
 ANDROID GOLDFISH RTC DRIVER