xhci: Add support for 64-bit DMA in generic XHCI controller driver

The XHCI controller on 64-bit SoCs need to use 64-bit DMA.
Add a quirk to tell the generic XHCI driver that 32-bit DMA needs
to be used, if there are any that may need to use 32-bit DMA only.

Reviewed by: andrew
Obtained from: Juniper Networks, Inc.