AES-GCM tests are used for AES-NI MB, OpenSSL,
QAT and DPAA2_SEC PMDs, so they are not specific to the first one.
Therefore, _mb_ prefix can be removed.
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com> Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>