Bluetooth: Add support for management powered event

This patch adds support for the powered event that's used to indicate to
userspace when the powered state of a local adapter changes.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h
index ca29c13..0ac1520 100644
--- a/include/net/bluetooth/mgmt.h
+++ b/include/net/bluetooth/mgmt.h
@@ -85,3 +85,9 @@
 struct mgmt_ev_index_removed {
 	__le16 index;
 } __packed;
+
+#define MGMT_EV_POWERED			0x0006
+struct mgmt_ev_powered {
+	__le16 index;
+	__u8 powered;
+} __packed;