Add SIM identifier to the network profile and cred block

This allows the specific SIM to be identified for authentication
purposes in multi-SIM devices. This SIM number represents the index of
the SIM slot. This SIM number shall be used for the authentication using
the respective SIM for the Wi-Fi connection to the corresponding
network.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

src/eap_peer/eap_config.h

@@ -678,6 +678,14 @@ struct eap_peer_config {
 	 * SIM/USIM processing.
 	 */
 	char *external_sim_resp;
+
+	/**
+	 * sim_num - User selected SIM identifier
+	 *
+	 * This variable is used for identifying which SIM is used if the system
+	 * has more than one.
+	 */
+	int sim_num;
 };