Replace "additonal" by "additional" in a comment.
Typo found by checkpatch.pl.
Signed-off-by: NCorentin Musard <corentinmusard@gmail.com>
Reviewed-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>