kernel: add missing config symbol for linux 3.14

Signed-off-by: Jonas Gorski <[email protected]>

SVN-Revision: 40374

target/linux/generic/config-3.14

@@ -3763,6 +3763,7 @@ CONFIG_USB_GADGET_VBUS_DRAW=2
 # CONFIG_USB_GL860 is not set
 # CONFIG_USB_GOKU is not set
 # CONFIG_USB_GPIO_VBUS is not set
+# CONFIG_USB_GR_UDC is not set
 # CONFIG_USB_GSPCA is not set
 # CONFIG_USB_GSPCA_BENQ is not set
 # CONFIG_USB_GSPCA_CONEX is not set