This file will print out the name of the currently running USB Gadget
Driver. It can be read even when there are no functions loaded.
Suggested-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

I noticed that this has been missing for quite
some time so I decided it was about time to
document it.
Signed-off-by: NFelipe Balbi <balbi@ti.com>