this fix booting from usb3.0 devices.
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not set
-CONFIG_USB_XHCI_HCD=m
+CONFIG_USB_XHCI_HCD=y
# CONFIG_USB_XHCI_HCD_DEBUGGING is not set
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not set
-CONFIG_USB_XHCI_HCD=m
+CONFIG_USB_XHCI_HCD=y
# CONFIG_USB_XHCI_HCD_DEBUGGING is not set
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not set
-CONFIG_USB_XHCI_HCD=m
+CONFIG_USB_XHCI_HCD=y
# CONFIG_USB_XHCI_HCD_DEBUGGING is not set
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y