chipidea: pci: make it depends on NOP_USB_XCEIV

After commit ba1aff67 (chipidea: pci: register nop PHY) the PCI glue driver
requires nop-PHY to be selected. Thus, make it an explicit dependency.
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Fixes: ba1aff67 (chipidea: pci: register nop PHY)
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NPeter Chen <peter.chen@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/chipidea/Kconfig

@@ -18,6 +18,7 @@ config USB_CHIPIDEA_OF
 config USB_CHIPIDEA_PCI
 	tristate
 	depends on PCI
+	depends on NOP_USB_XCEIV
 	default USB_CHIPIDEA
 
 config USB_CHIPIDEA_UDC