Revert "xhci: Reset Renesas uPD72020x USB controller for 32-bit DMA issue"

This reverts commit 8466489e.

Now that we can properly reset the uPD72020x without a hard PCI reset,
let's get rid of the existing quirks.

Tested-by: Domenico Andreoli <domenico.andreoli@linux.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Tested-by: Faiz Abbas <faiz_abbas@ti.com>
Tested-by: Domenico Andreoli <domenico.andreoli@linux.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>