usb: dwc2: pci: Select the generic PHY for dwc2-pci driver

The dwc2-pci driver requires the generic PHY. This fixes undefined
reference issues when it is not selected.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/dwc2/Kconfig

@@ -62,6 +62,7 @@ config USB_DWC2_PCI
 	depends on PCI
 	default n
 	select USB_DWC2_PLATFORM
+	select NOP_USB_XCEIV
 	help
 	  The Designware USB2.0 PCI interface module for controllers
 	  connected to a PCI bus.