Sync patch r14338 and r14339 from main trunk.
1. MdeMdeModulePkg/UsbBusDxe: Break device enumeration process if the device descriptor includes 0 configuration.
2. MdeMdeModulePkg/Xhci: Clear BIOS_OWN semaphore before halting XHCI controller.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/branches/UDK2010.SR1@14341 6f19259b-4bc3-4df7-8a09-765794883524