crypto/aesni_gcm: fix IV size in capabilities

This patch sets iv size in aesni gcm PMD to 12 bytes to be
conformant with nist SP800-38D.

Fixes: eec136f3c54f ("aesni_gcm: add driver for AES-GCM crypto operations")

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
Acked-by: Piotr Azarewicz <piotrx.t.azarewicz@intel.com>

drivers/crypto/aesni_gcm/aesni_gcm_pmd_ops.c

@@ -77,8 +77,8 @@ static const struct rte_cryptodev_capabilities aesni_gcm_pmd_capabilities[] = {
 					.increment = 0
 				},
 				.iv_size = {
-					.min = 16,
-					.max = 16,
+					.min = 12,
+					.max = 12,
 					.increment = 0
 				}
 			}, }