EZchip NPS Interrupt Controller

Required properties:

- compatible : should be "ezchip,nps400-ic"
- interrupt-controller : Identifies the node as an interrupt controller
- #interrupt-cells : Specifies the number of cells needed to encode an
  interrupt source. The value shall be 1.


Example:

intc: interrupt-controller {
	compatible = "ezchip,nps400-ic";
	interrupt-controller;
	#interrupt-cells = <1>;
};