Realtek CPU Interrupt Controller

Required properties:
- compatible: "mti,cpu-interrupt-controller"
- interrupt-controller : Identifies the node as an interrupt controller.
- #interrupt-cells : Specifies the number of cells needed to encode an
  interrupt source.

Example:

	cpuintc: cpuintc@0 {
		#address-cells = <0>;
		#interrupt-cells = <1>;
		interrupt-controller;
		compatible = "mti,cpu-interrupt-controller";
	};

Realtek VEC Interrupt Controller

Required properties:
- compatible: "realtek,vec-interrupt-controller"
- interrupt-controller : Identifies the node as an interrupt controller.
- #interrupt-cells : Specifies the number of cells needed to encode an
  interrupt source.

Example:

	vecintc: vecintc@0 {
		#address-cells = <0>;
		#interrupt-cells = <1>;
		interrupt-controller;
		compatible = "realtek,vec-interrupt-controller";
	};
