generic: extend pci_isable_usb_common_quirks patch

Fixes the following build error:
  SYSMAP  System.map
  Building modules, stage 2.
  MODPOST 48 modules
ERROR: "usb_enable_xhci_ports" [drivers/usb/host/ehci-hcd.ko] undefined!
ERROR: "usb_is_intel_switchable_xhci" [drivers/usb/host/ehci-hcd.ko] undefined!
make[6]: *** [__modpost] Error 1
make[5]: *** [modules] Error 2

SVN-Revision: 33193