dt-bindings: Add devicetree bindings

Add snapshot of device tree bindings from keystone common kernel, branch
"android-mainline-keystone-qcom-release" at c4c12103f9c0 ("Snap for 9228065
from e32903b9a63bb558df8b803b076619c53c16baad to
android-mainline-keystone-qcom-release").

Change-Id: I7682079615cbd9f29340a5c1f2a1d84ec441a1f1
Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>

bindings/interrupt-controller/mti,cpu-interrupt-controller.yaml

@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/mti,cpu-interrupt-controller.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MIPS CPU Interrupt Controller
+
+description: >
+   On MIPS the mips_cpu_irq_of_init() helper can be used to initialize the 8 CPU
+   IRQs from a devicetree file and create a irq_domain for IRQ controller.
+
+   With the irq_domain in place we can describe how the 8 IRQs are wired to the
+   platforms internal interrupt controller cascade.
+
+maintainers:
+  - Thomas Bogendoerfer <tsbogend@alpha.franken.de>
+
+properties:
+  compatible:
+    const: mti,cpu-interrupt-controller
+
+  '#interrupt-cells':
+    const: 1
+
+  '#address-cells':
+    const: 0
+
+  interrupt-controller: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - '#interrupt-cells'
+  - '#address-cells'
+  - interrupt-controller
+
+examples:
+  - |
+    interrupt-controller {
+      compatible = "mti,cpu-interrupt-controller";
+      #address-cells = <0>;
+      #interrupt-cells = <1>;
+      interrupt-controller;
+    };