wpa_supplicant: Add option -I for additional config file

This option can be used only for global parameters that is not going
to be changed from settings.

Change-Id: I4f18aa0a8503cf8cc3a847ac9fcc15419291edf0
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Signed-off-by: Iliyan Malchev <malchev@google.com>
diff --git a/wpa_supplicant/eapol_test.c b/wpa_supplicant/eapol_test.c
index 87e399c..dad2765 100644
--- a/wpa_supplicant/eapol_test.c
+++ b/wpa_supplicant/eapol_test.c
@@ -1232,7 +1232,7 @@
 
 	os_memset(&wpa_s, 0, sizeof(wpa_s));
 	eapol_test.wpa_s = &wpa_s;
-	wpa_s.conf = wpa_config_read(conf);
+	wpa_s.conf = wpa_config_read(conf, NULL);
 	if (wpa_s.conf == NULL) {
 		printf("Failed to parse configuration file '%s'.\n", conf);
 		return -1;