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* Freescale i.MX ci13xxx usb controllers

Required properties:
- compatible: Should be "fsl,imx27-usb"
- reg: Should contain registers location and length
- interrupts: Should contain controller interrupt

Optional properties:
- fsl,usbphy: phandler of usb phy that connects to the only one port
- vbus-supply: regulator for vbus

Examples:
usb@02184000 { /* USB OTG */
	compatible = "fsl,imx6q-usb", "fsl,imx27-usb";
	reg = <0x02184000 0x200>;
	interrupts = <0 43 0x04>;
	fsl,usbphy = <&usbphy1>;
};