Check authsize to solve the extra tests that expect -EINVAL to be
returned when the authentication tag size is not valid.

Validated authsize for GCM, RFC4106 and RFC4543.
Signed-off-by: NIuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: NHoria Geanta <horia.geanta@nxp.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>