clk: exynos5410: add USB related clocks
ARM: dts: exynos5410: Enabled USB support on Exynso5410 platform

Adding required DT nodes to enable support for USB 2.0(EHCI/OHCI)
and USB 3.0 (DWC3) on exynos5410 platform.
ARM: dts: exynos5410-odroidxu: Add usb overcurrent and vbus pinctrl

Add device tree entries for the GPIO  that control USB port power on
odroid-xu.
ARM: dts: Enable USB 3503a hub on odroid-xu

The Odroid has a SMSC USB3503 connected in hardware only mode
like a PHY, support it using the usb-nop-xceiv binding.
Note that due to a regrettable decision to use a regulator to represent
the reset signal this uses a fixed voltage regulator to do that, there
is a plan to use the reset controller binding once that is merged so it
does not seem worthwhile to fix the usb-nop-xceiv driver at this point.
 usb: misc: usb3503: Adding support secondary-refclk for usb3503

 This patch is to add a property 'secondary-refclk' to select
 the secondary REFCLK frequencies for odroid-xu.
 You can select the secondary frequencies in the device tree