Bluetooth: Add support for set_discoverable management command

This patch adds a set_discoverable command to the management interface
as well as the corresponding event. The command is used to control the
discoverable state of adapters.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 2d046e0..ee5ec4f 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -675,6 +675,7 @@
 int mgmt_index_added(u16 index);
 int mgmt_index_removed(u16 index);
 int mgmt_powered(u16 index, u8 powered);
+int mgmt_discoverable(u16 index, u8 discoverable);
 
 /* HCI info for socket */
 #define hci_pi(sk) ((struct hci_pinfo *) sk)