Add endpoint in TLS 1.2 session serialization data

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/include/test/ssl_helpers.h b/tests/include/test/ssl_helpers.h
index d03c624..ec00fd5 100644
--- a/tests/include/test/ssl_helpers.h
+++ b/tests/include/test/ssl_helpers.h
@@ -531,6 +531,7 @@
  */
 int mbedtls_test_ssl_tls12_populate_session(mbedtls_ssl_session *session,
                                             int ticket_len,
+                                            int endpoint_type,
                                             const char *crt_file);
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)