chipidea: pci: make it depends on NOP_USB_XCEIV

After commit ba1aff67f99a (chipidea: pci: register nop PHY) the PCI glue driver
requires nop-PHY to be selected. Thus, make it an explicit dependency.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: ba1aff67f99a (chipidea: pci: register nop PHY)
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig
index 8b0edb9..5ce3f1d 100644
--- a/drivers/usb/chipidea/Kconfig
+++ b/drivers/usb/chipidea/Kconfig
@@ -18,6 +18,7 @@
 config USB_CHIPIDEA_PCI
 	tristate
 	depends on PCI
+	depends on NOP_USB_XCEIV
 	default USB_CHIPIDEA
 
 config USB_CHIPIDEA_UDC