This patch adds the table implementation of the Advanced Encryption Standard (AES)
InvMixColumns transformation.

The patch is intentionally asymmetrical -- the MixColumns table is not added because
there is no known use for it at this time.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>