MSM HSIC EHCI controller

Required properties :
- compatible : should be "qcom,hsic-host"
- regs : offset and length of the register set in the memory map
- interrupts: IRQ lines used by this controller
- interrupt-names : Required interrupt resource entries are:
	"core_irq" : Interrupt for HSIC core
- <supply-name>-supply: handle to the regulator device tree node
  Required "supply-name" is "HSIC_VDDCX" and optionally - "HSIC_GDSC".

Optional properties :
- interrupt-parent - This must provide reference to the current
        device node.
- #address-cells - Should provide a value of 0.
- interrupts - Should be <0 1 2> and it is an index to the
        interrupt-map.
- #interrupt-cells - should provide a value of 1.
- #interrupt-mask - should provide a value of 0xffffffff.
- interrupt-map - Must create mapping for the number of interrupts
        that are defined in above interrupts property.
        For HSIC device node, it should define 3 mappings for
        core_irq, async_irq and wakeup in the format
        mentioned in below example node of HSIC.

- interrupt-names : Optional interrupt resource entries are:
	"async_irq" : Interrupt from HSIC for asynchronous events in HSIC LPM.
	"wakeup" : Wakeup interrupt from HSIC during suspend (or XO shutdown).
- hsic,<gpio-name>-gpio : handle to the GPIO node, see "gpios property"
  in Documentation/devicetree/bindings/gpio/gpio.txt.
  Optional "gpio-name" can be "strobe", "data" and "resume".
- hsic,resume-gpio : if present then periperal connected to hsic controller
  cannot wakeup from XO shutdown using in-band hsic resume. Use resume
  gpio to wakeup peripheral
- hsic,ignore-cal-pad-config : If present then HSIC CAL PAD configuration
  using TLMM is not performed.
- hsic,strobe-pad-offset : Offset of TLMM register for configuring HSIC
  STROBE GPIO PAD.
- hsic,data-pad-offset : Offset of TLMM register for configuring HSIC
  DATA GPIO PAD.
- 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


Example MSM HSIC EHCI controller device node :
	hsic_host: hsic@f9a15000 {
		compatible = "qcom,hsic-host";
		reg = <0xf9a15000 0x400>;
		#address-cells = <0>;
		interrupt-parent = <&hsic_host>;
		interrupts = <0 1 2>;
		#interrupt-cells = <1>;
		interrupt-map-mask = <0xffffffff>;
		interrupt-map = <0 &intc 0 136 0
			1 &intc 0 148 0
			2 &msmgpio 144 0x8>;
		interrupt-names = "core_irq", "async_irq", "wakeup";
		HSIC_VDDCX-supply = <&pm8019_l12>;
		HSIC_GDSC-supply = <&gdsc_usb_hsic>;
		hsic,strobe-gpio = <&msmgpio 144 0x00>;
		hsic,data-gpio = <&msmgpio 145 0x00>;
		hsic,resume-gpio = <&msmgpio 80 0x00>;
		hsic,ignore-cal-pad-config;
		hsic,strobe-pad-offset = <0x2050>;
		hsic,data-pad-offset = <0x2054>;

		qcom,msm-bus,name = "hsic";
		qcom,msm-bus,num-cases = <2>;
		qcom,msm-bus,active-only = <0>;
		qcom,msm-bus,num-paths = <1>;
		qcom,msm-bus,vectors-KBps =
				<85 512 0 0>,
				<85 512 40000 160000>;
        };

SMSC HSIC HUB

Required properties :
- compatible : should be "qcom,hsic-smsc-hub"
- smsc,<gpio-name>-gpio : handle to the GPIO node, see "gpios property"
  in Documentation/devicetree/bindings/gpio/gpio.txt.
  Required "gpio-name" is "reset" and optionally - "refclk", "int".
- <supply-name>-supply: handle to the regulator device tree node
  Required "supply-name" is "hub_init" and optionally - "hub_vbus".
- Sub node for "MSM HSIC EHCI controller".
  Sub node has the required properties mentioned above.

Example SMSC HSIC HUB :
	hsic_hub {
		compatible = "qcom,hsic-smsc-hub";
		ranges;
		smsc,reset-gpio = <&pm8941_gpios 8 0x00>;
		smsc,refclk-gpio = <&pm8941_gpios 16 0x00>;
		smsc,int-gpio = <&msmgpio 50 0x00>;
		hub_int-supply = <&pm8941_l10>;
		hub_vbus-supply = <&pm8941_mvs1>;

		hsic@f9a00000 {
			compatible = "qcom,hsic-host";
			reg = <0xf9a00000 0x400>;
			interrupts = <0 136 0>;
			interrupt-names = "core_irq";
			HSIC_VDDCX-supply = <&pm8841_s2>;
			HSIC_GDSC-supply = <&gdsc_usb_hsic>;
			hsic,strobe-gpio = <&msmgpio 144 0x00>;
			hsic,data-gpio = <&msmgpio 145 0x00>;
			hsic,ignore-cal-pad-config;
			hsic,strobe-pad-offset = <0x2050>;
			hsic,data-pad-offset = <0x2054>;
		};
	};