early data: rename configuration function

Rename mbedtls_ssl_tls13_conf_early_data as
mbedtls_ssl_conf_early_data since in the future this may not be
specific to TLS 1.3.

Signed-off-by: Yanray Wang <yanray.wang@arm.com>
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index a2c3822..2a2bd8f 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -1770,8 +1770,8 @@
 }
 
 #if defined(MBEDTLS_SSL_EARLY_DATA)
-void mbedtls_ssl_tls13_conf_early_data(mbedtls_ssl_config *conf,
-                                       int early_data_enabled)
+void mbedtls_ssl_conf_early_data(mbedtls_ssl_config *conf,
+                                 int early_data_enabled)
 {
     conf->early_data_enabled = early_data_enabled;
 }
@@ -5247,7 +5247,7 @@
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 
 #if defined(MBEDTLS_SSL_EARLY_DATA)
-    mbedtls_ssl_tls13_conf_early_data(conf, MBEDTLS_SSL_EARLY_DATA_DISABLED);
+    mbedtls_ssl_conf_early_data(conf, MBEDTLS_SSL_EARLY_DATA_DISABLED);
 #if defined(MBEDTLS_SSL_SRV_C)
     mbedtls_ssl_tls13_conf_max_early_data_size(
         conf, MBEDTLS_SSL_MAX_EARLY_DATA_SIZE);