In commit e6a9854b05c1a6af1308fe2b8c68f35abf28a3ee, the rate control API
was rewritten, so make the needed changes to the agnx driver so that it
will build and work properly.
Cc: Li YanBo <dreamfly281@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>