Qualcomm Technologies, Inc. emulation USB PHY

Required properties:
- compatible:	should contain "qcom,usb-emu-phy"
- reg:		offset and length of the register set in the memory map
- qcom,emu-init-seq:	emulation initialization sequence of value,reg pairs

Optional properties:
- reg:		Additional register names supported are
		"qcratch_base"

Example PHY device node:

	usb_emu_phy@a720000 {
		compatible = "qcom,usb-emu-phy";
		reg = <0x0a720000 0x9500>,
		      <0x0a6f8800 0x100>;
		reg-names = "base", "qcratch_base";

		qcom,emu-init-seq = <0xfff0 0x4
				     0xfff3 0x4
				     0xfff0 0x4
				     0x100000 0x20
				     0x0 0x20
				     0x1a0 0x20
				     0x100000 0x3c
				     0x0 0x3c
				     0x10060 0x3c
				     0x0 0x4>;
	};