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* H8S Interrupt controller

Required properties:

- compatible: has to be "renesas,h8s-intc", "renesas,h8300-intc" as fallback.
- #interrupt-cells: has to be <2>: an interrupt index and flags, as defined in
  interrupts.txt in this directory
- regs: Base address of interrupt controller registers.

Optional properties:

- any properties, listed in interrupts.txt, and any standard resource allocation
  properties

Example:

	h8intc: interrupt-controller@fffe00 {
		compatible = "renesas,h8s-intc", "renesas,h8300-intc";
		#interrupt-cells = <2>;
		interrupt-controller;
		reg = <0xfffe00 24>;
	};