usb: xhci: fix USB_XHCI_PCI depends

The xhci-pci-renesas module exports symbols for xhci-pci to load the
RAM/ROM on renesas xhci controllers. We had dependency which works
when both the modules are builtin or modules.

But if xhci-pci is inbuilt and xhci-pci-renesas in module, we get below
linker error:
drivers/usb/host/xhci-pci.o: In function `xhci_pci_remove':
drivers/usb/host/xhci-pci.c:411: undefined reference to `renesas_xhci_pci_exit'
drivers/usb/host/xhci-pci.o: In function `xhci_pci_probe':
drivers/usb/host/xhci-pci.c:345: undefined reference to `renesas_xhci_check_request_fw'

Fix this by adding USB_XHCI_PCI having depends on USB_XHCI_PCI_RENESAS
|| !USB_XHCI_PCI_RENESAS so that both can be either inbuilt or modules.
Reported-by: Anders Roxell <anders.roxell@linaro.org>
Fixes: a66d21d7 ("usb: xhci: Add support for Renesas controller with memory")
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200519050622.994908-1-vkoul@kernel.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/Kconfig

@@ -40,11 +40,11 @@ config USB_XHCI_DBGCAP
 config USB_XHCI_PCI
 	tristate
 	depends on USB_PCI
+	depends on USB_XHCI_PCI_RENESAS || !USB_XHCI_PCI_RENESAS
 	default y
 
 config USB_XHCI_PCI_RENESAS
 	tristate "Support for additional Renesas xHCI controller with firwmare"
-	depends on USB_XHCI_PCI
 	---help---
 	  Say 'Y' to enable the support for the Renesas xHCI controller with
 	  firwmare. Make sure you have the firwmare for the device and