Bluetooth: Add support for extended index management events

This introduces support for using Extended Index Added and Extended
Index Removed events. These events contain the controller type and
also the hardware bus information from the driver.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 0995ec7..b831871 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -183,6 +183,7 @@
 enum {
 	HCI_MGMT_INDEX_EVENTS,
 	HCI_MGMT_UNCONF_INDEX_EVENTS,
+	HCI_MGMT_EXT_INDEX_EVENTS,
 };
 
 /*