USB: struct usb_device: change flag to bitflag

This patch (as816) changes an existing flag in the usb_device
structure to a bitflag, preparing the way for more bitflags to come
in the future.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 864c6c21..5634a2d 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -362,7 +362,7 @@
 	u8 portnum;			/* Parent port number (origin 1) */
 	u8 level;			/* Number of USB hub ancestors */
 
-	int have_langid;		/* whether string_langid is valid */
+	unsigned have_langid:1;		/* whether string_langid is valid */
 	int string_langid;		/* language ID for strings */
 
 	/* static strings from the device */