usb gadget: minor USBCV fix for composite framework

Fill in a reserved/unused device qualifier field to ensure that
the USBCV tests will always pass.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index b3d302a..85c876c 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -294,6 +294,7 @@
 	/* ASSUME same EP0 fifo size at both speeds */
 	qual->bMaxPacketSize0 = cdev->desc.bMaxPacketSize0;
 	qual->bNumConfigurations = count_configs(cdev, USB_DT_DEVICE_QUALIFIER);
+	qual->bRESERVED = 0;
 }
 
 /*-------------------------------------------------------------------------*/