Update to new version 0.8.16 from BRCM

Sync with main tree commit b8349523e460493fa0b4de36c689595109e45e91
Author: Neeraj Kumar Garg <neerajkg@broadcom.com>
Date:   Tue Dec 27 23:21:45 2011 +0200
    P2P: Reject p2p_group_add if forced frequency is not acceptable

Change-Id: Icb4541a371b05c270e80440d7a7fdea7f33ff61e
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/src/drivers/driver_common.c b/src/drivers/driver_common.c
new file mode 100644
index 0000000..26ca8d6
--- /dev/null
+++ b/src/drivers/driver_common.c
@@ -0,0 +1,90 @@
+/*
+ * Common driver-related functions
+ * Copyright (c) 2003-2011, Jouni Malinen <j@w1.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#include "includes.h"
+#include "utils/common.h"
+#include "driver.h"
+
+void wpa_scan_results_free(struct wpa_scan_results *res)
+{
+	size_t i;
+
+	if (res == NULL)
+		return;
+
+	for (i = 0; i < res->num; i++)
+		os_free(res->res[i]);
+	os_free(res->res);
+	os_free(res);
+}
+
+
+const char * event_to_string(enum wpa_event_type event)
+{
+#define E2S(n) case EVENT_ ## n: return #n
+	switch (event) {
+	E2S(ASSOC);
+	E2S(DISASSOC);
+	E2S(MICHAEL_MIC_FAILURE);
+	E2S(SCAN_RESULTS);
+	E2S(ASSOCINFO);
+	E2S(INTERFACE_STATUS);
+	E2S(PMKID_CANDIDATE);
+	E2S(STKSTART);
+	E2S(TDLS);
+	E2S(FT_RESPONSE);
+	E2S(IBSS_RSN_START);
+	E2S(AUTH);
+	E2S(DEAUTH);
+	E2S(ASSOC_REJECT);
+	E2S(AUTH_TIMED_OUT);
+	E2S(ASSOC_TIMED_OUT);
+	E2S(FT_RRB_RX);
+	E2S(WPS_BUTTON_PUSHED);
+	E2S(TX_STATUS);
+	E2S(RX_FROM_UNKNOWN);
+	E2S(RX_MGMT);
+	E2S(RX_ACTION);
+	E2S(REMAIN_ON_CHANNEL);
+	E2S(CANCEL_REMAIN_ON_CHANNEL);
+	E2S(MLME_RX);
+	E2S(RX_PROBE_REQ);
+	E2S(NEW_STA);
+	E2S(EAPOL_RX);
+	E2S(SIGNAL_CHANGE);
+	E2S(INTERFACE_ENABLED);
+	E2S(INTERFACE_DISABLED);
+	E2S(CHANNEL_LIST_CHANGED);
+	E2S(INTERFACE_UNAVAILABLE);
+	E2S(BEST_CHANNEL);
+	E2S(UNPROT_DEAUTH);
+	E2S(UNPROT_DISASSOC);
+	E2S(STATION_LOW_ACK);
+	E2S(P2P_DEV_FOUND);
+	E2S(P2P_GO_NEG_REQ_RX);
+	E2S(P2P_GO_NEG_COMPLETED);
+	E2S(P2P_PROV_DISC_REQUEST);
+	E2S(P2P_PROV_DISC_RESPONSE);
+	E2S(P2P_SD_REQUEST);
+	E2S(P2P_SD_RESPONSE);
+	E2S(IBSS_PEER_LOST);
+	E2S(DRIVER_GTK_REKEY);
+	E2S(SCHED_SCAN_STOPPED);
+	E2S(DRIVER_CLIENT_POLL_OK);
+	E2S(EAPOL_TX_STATUS);
+	}
+
+	return "UNKNOWN";
+#undef E2S
+}