XHCI Hand-off: enables or disables XHCI Hand-off function. This is a workaround for operating systems without XHCI
hand-off support. The XHCI ownership change should be claimed by XHCI driver.
EHCI Hand-off: this is a workaround for operating systems without EHCI hand-off support. The EHCI ownership
change should be claimed by EHCI driver.