[xhci] Record device-specific quirks in xHCI device structure

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/drivers/usb/xhci.c

 		goto err_alloc;
 	}
 	xhci->name = pci->dev.name;
+	xhci->quirks = pci->id->driver_data;
 
 	/* Fix up PCI device */
 	adjust_pci_device ( pci );
 	xhci_legacy_claim ( xhci );
 
 	/* Fix Intel PCH-specific quirks, if applicable */
-	if ( pci->id->driver_data & XHCI_PCH )
+	if ( xhci->quirks & XHCI_PCH )
 		xhci_pch_fix ( xhci, pci );
 
 	/* Reset device */
  err_alloc_bus:
 	xhci_reset ( xhci );
  err_reset:
-	if ( pci->id->driver_data & XHCI_PCH )
+	if ( xhci->quirks & XHCI_PCH )
 		xhci_pch_undo ( xhci, pci );
 	xhci_legacy_release ( xhci );
 	iounmap ( xhci->regs );
 	unregister_usb_bus ( bus );
 	free_usb_bus ( bus );
 	xhci_reset ( xhci );
-	if ( pci->id->driver_data & XHCI_PCH )
+	if ( xhci->quirks & XHCI_PCH )
 		xhci_pch_undo ( xhci, pci );
 	xhci_legacy_release ( xhci );
 	iounmap ( xhci->regs );

src/drivers/usb/xhci.h

 	void *regs;
 	/** Name */
 	const char *name;
+	/** Quirks */
+	unsigned int quirks;
 
 	/** Capability registers */
 	void *cap;