MSM SuperSpeed USB3.0 SoC controller

Required properties :
- compatible : should be "qcom,dwc-usb3-msm"
- reg : offset and length of the register set in the memory map
	offset and length of the TCSR register for routing USB
	signals to either picoPHY0 or picoPHY1.
- interrupts: IRQ lines used by this controller
- interrupt-names : Required interrupt resource entries are:
	"irq" : Interrupt for DWC3 core
	"otg_irq" : Interrupt for DWC3 core's OTG Events
- <supply-name>-supply: phandle to the regulator device tree node
  Required "supply-name" examples are "SSUSB_VDDCX", "SSUSB_1p8",
  "HSUSB_VDDCX", "HSUSB_1p8", "HSUSB_3p3" and "vbus_dwc3".
- qcom,dwc-usb3-msm-dbm-eps: Number of endpoints avaliable for
  the DBM (Device Bus Manager). The DBM is HW unit which is part of
  the MSM USB3.0 core (which also includes the Synopsys DesignWare
  USB3.0 controller)

Optional properties :
- Refer to "Documentation/devicetree/bindings/arm/msm/msm_bus.txt" for
  below optional properties:
    - qcom,msm_bus,name
    - qcom,msm_bus,num_cases
    - qcom,msm_bus,active_only
    - qcom,msm_bus,num_paths
    - qcom,msm_bus,vectors
- interrupt-names : Optional interrupt resource entries are:
    "hs_phy_irq" : Interrupt from HSPHY for asynchronous events in LPM.
	This is not used if wakeup events are received externally (e.g. PMIC)
- qcom,otg-capability: If present then depend on PMIC for VBUS notifications,
  otherwise depend on PHY.
- qcom,charging-disabled: If present then battery charging using USB
  is disabled.

Example MSM USB3.0 controller device node :
	usb@f9200000 {
		compatible = "qcom,dwc-usb3-msm";
		reg = <0xF9200000 0xFA000>,
		      <0xFD4AB000 0x4>;
		interrupts = <0 131 0>, <0 179 0>, <0 133 0>;
		interrupt-names = "irq", "otg_irq", "hs_phy_irq";
		SSUSB_VDDCX-supply = <&pm8841_s2>;
		SSUSB_1p8-supply = <&pm8941_l6>;
		HSUSB_VDDCX-supply = <&pm8841_s2>;
		HSUSB_1p8-supply = <&pm8941_l6>;
		HSUSB_3p3-supply = <&pm8941_l24>;
		vbus_dwc3-supply = <&pm8941_mvs1>;
		qcom,dwc-usb3-msm-dbm-eps = <4>

		qcom,msm_bus,name = "usb3";
		qcom,msm_bus,num_cases = <2>;
		qcom,msm_bus,active_only = <0>;
		qcom,msm_bus,num_paths = <1>;
		qcom,msm_bus,vectors =
				<61 512 0 0>,
				<61 512 240000000 960000000>;
	};