xhci: Rename Asrock P67 pci product-id to EJ168

The 7023 product id is the generic product id for the Etron EJ168, it is
not specific to the version found on the Asrock P67 motherboard. The same id
is e.g. also used on Gigabyte motherboards and on no-name pci-e usb-3 addon
cards.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>