Add UNAUTH-TLS vendor specific EAP type

This EAP type uses a vendor specific expanded EAP header to encapsulate
EAP-TLS with a configuration where the EAP server does not authenticate
the EAP peer. In other words, this method includes only server
authentication. The peer is configured with only the ca_cert parameter
(similarly to other TLS-based EAP methods). This method can be used for
cases where the network provides free access to anyone, but use of RSN
with a securely derived unique PMK for each station is desired.

The expanded EAP header uses the hostapd/wpa_supplicant vendor
code 39068 and vendor type 1 to identify the UNAUTH-TLS method.

Signed-hostap: Jouni Malinen <j@w1.fi>

src/eap_common/eap_defs.h

@@ -75,6 +75,9 @@ enum {
 	EAP_VENDOR_HOSTAP = 39068 /* hostapd/wpa_supplicant project */
 };
 
+#define EAP_VENDOR_UNAUTH_TLS EAP_VENDOR_HOSTAP
+#define EAP_VENDOR_TYPE_UNAUTH_TLS 1
+
 #define EAP_MSK_LEN 64
 #define EAP_EMSK_LEN 64