Nuvoton NPCM7XX SoC USB controllers:
-----------------------------

EHCI:
-----

Required properties:
- compatible: should be one of
    "nuvoton,npcm750-ehci"
    "nuvoton,npcm845-ehci"
- interrupts: Should contain the EHCI interrupt
- reg:        Physical address and length of the register set for the device

Example:

	ehci1: usb@f0806000 {
		compatible = "nuvoton,npcm750-ehci";
		reg = <0xf0806000 0x1000>;
		interrupts = <0 61 4>;
	};
