crypto/cnxk: update auth key size
crypto/cnxk: update auth key size

Update auth key size in capabilities for to support
SHA256_HMAC for cn9k.

Signed-off-by: Archana Muniganti <13addfa99e3f8dc2a74205bf40642b3240d433cc@marvell.com>
Acked-by: Anoob Joseph <3ccb4777bd2856f4d9127f25efe6455b1a791ba2@marvell.com>
Acked-by: Akhil Goyal <c3c9da6f7a1dc963875aa67cfd85a4c94f75d526@marvell.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk