Write SAE and FT-SAE key_mgmt to config

This was forgotten when the key_mgmt parser for SAE and FT-SAE was
added.

Signed-off-by: Javier Lopez <jlopex@gmail.com>
Signed-off-by: Jason Mobarak <x@jason.mobarak.name>
Signed-off-by: Thomas Pedersen <thomas@noack.us>

wpa_supplicant/config.c

@@ -677,6 +677,28 @@ static char * wpa_config_write_key_mgmt(const struct parse_data *data,
 	}
 #endif /* CONFIG_WPS */
 
+#ifdef CONFIG_SAE
+	if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
+		ret = os_snprintf(pos, end - pos, "%sSAE",
+				  pos == buf ? "" : " ");
+		if (ret < 0 || ret >= end - pos) {
+			end[-1] = '\0';
+			return buf;
+		}
+		pos += ret;
+	}
+
+	if (ssid->key_mgmt & WPA_KEY_MGMT_FT_SAE) {
+		ret = os_snprintf(pos, end - pos, "%sFT-SAE",
+				  pos == buf ? "" : " ");
+		if (ret < 0 || ret >= end - pos) {
+			end[-1] = '\0';
+			return buf;
+		}
+		pos += ret;
+	}
+#endif /* CONFIG_SAE */
+
 	if (pos == buf) {
 		os_free(buf);
 		buf = NULL;