[PATCH] USB: kernel-doc for linux/usb.h

Fix kernel-doc warning in linux/usb.h.
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/linux/usb.h

@@ -47,6 +47,7 @@ struct usb_driver;
  * @urb_list: urbs queued to this endpoint; maintained by usbcore
  * @hcpriv: for use by HCD; typically holds hardware dma queue head (QH)
  *	with one or more transfer descriptors (TDs) per urb
+ * @kobj: kobject for sysfs info
  * @extra: descriptors following this endpoint in the configuration
  * @extralen: how many bytes of "extra" are valid
  *