crypto/zuc: batch ops with same transform

crypto/zuc: batch ops with same transform

The ZUC API to encrypt packets does not require the operations
to share the same key. Currently, the operations were being
batched only when they shared the same key, but this is not needed.

Instead, now operations will be batched based on the transform
(cipher only, auth only...).

Fixes: cf7685d68f00 ("crypto/zuc: add driver for ZUC library")
Cc: stable@dpdk.org
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>