x86: conga-qeval20-qa3-e3845.dts: Enable xHCI support in dts

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

arch/x86/dts/conga-qeval20-qa3-e3845.dts

@@ -258,6 +258,9 @@
 		fsp,enable-spi;
 		fsp,enable-sata;
 		fsp,sata-mode = <SATA_MODE_AHCI>;
+#ifdef CONFIG_USB_XHCI_HCD
+		fsp,enable-xhci;
+#endif
 		fsp,lpe-mode = <LPE_MODE_PCI>;
 		fsp,lpss-sio-mode = <LPSS_SIO_MODE_PCI>;
 		fsp,enable-dma0;