MSM SoC HSUSB controllers

EHCI

Required properties:
- compatible:	Should contain "qcom,ehci-host"
- regs:			offset and length of the register set in the memory map
- usb-phy:		phandle for the PHY device

Example EHCI controller device node:

	ehci: ehci@f9a55000 {
		compatible = "qcom,ehci-host";
		reg = <0xf9a55000 0x400>;
		usb-phy = <&usb_otg>;
	};

