tests: ssl: Add early data handshake option

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/src/test_helpers/ssl_helpers.c b/tests/src/test_helpers/ssl_helpers.c
index 2090f92..a9a2159 100644
--- a/tests/src/test_helpers/ssl_helpers.c
+++ b/tests/src/test_helpers/ssl_helpers.c
@@ -67,6 +67,7 @@
     opts->expected_srv_fragments = 1;
     opts->legacy_renegotiation = MBEDTLS_SSL_LEGACY_NO_RENEGOTIATION;
     opts->resize_buffers = 1;
+    opts->early_data = MBEDTLS_SSL_EARLY_DATA_DISABLED;
 #if defined(MBEDTLS_SSL_CACHE_C)
     TEST_CALLOC(opts->cache, 1);
     mbedtls_ssl_cache_init(opts->cache);
@@ -812,6 +813,10 @@
 
     mbedtls_ssl_conf_authmode(&(ep->conf), MBEDTLS_SSL_VERIFY_REQUIRED);
 
+#if defined(MBEDTLS_SSL_EARLY_DATA)
+    mbedtls_ssl_conf_early_data(&(ep->conf), options->early_data);
+#endif
+
 #if defined(MBEDTLS_SSL_CACHE_C) && defined(MBEDTLS_SSL_SRV_C)
     if (endpoint_type == MBEDTLS_SSL_IS_SERVER && options->cache != NULL) {
         mbedtls_ssl_conf_session_cache(&(ep->conf), options->cache,