ipsec: fix C++ include

[ upstream commit e82470e ]

C++ does not have automatic casting to/from void pointers, so need
explicit cast if header is to be included in C++ code

Fixes: f901d9c ("ipsec: add helpers to group completed crypto-ops")

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

lib/librte_ipsec/rte_ipsec_group.h

@@ -49,10 +49,10 @@ rte_ipsec_ses_from_crypto(const struct rte_crypto_op *cop)
 
 	if (cop->sess_type == RTE_CRYPTO_OP_SECURITY_SESSION) {
 		ss = cop->sym[0].sec_session;
-		return (void *)(uintptr_t)ss->opaque_data;
+		return (struct rte_ipsec_session *)(uintptr_t)ss->opaque_data;
 	} else if (cop->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
 		cs = cop->sym[0].session;
-		return (void *)(uintptr_t)cs->opaque_data;
+		return (struct rte_ipsec_session *)(uintptr_t)cs->opaque_data;
 	}
 	return NULL;
 }