usb: xhci: Add support UPD720201K8 PCI to USB

The µPD720201 is a USB host controller LSI compatible with the USB 3.0
and xHCI (eXtensible Host Controller Interface) 1.0 specifications.The
system bus is compatible with the PCIe Gen2 specification.The controller
provides four USB ports with LS (low-Speed) / FS (full-Speed) /
HS (high-Speed) / SS (SuperSpeed) support. The µPD720201 comes in a
68-pin QFN package and has the following improvements over previous
products.

Change-Id: Ie77c2d6d57e88c91d493f5055bef15a7d6b537a8
Signed-off-by: zhaochen <zhaochen@codeaurora.org>