Bluetooth: Enable timestamps for control channel

The control channel can be also monitored, so include timestamps here
as well. And make sure management events get their timestamp when they
are created.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 08c657d..8b4df04 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -817,6 +817,9 @@
 	if (data)
 		memcpy(skb_put(skb, data_len), data, data_len);
 
+	/* Time stamp */
+	__net_timestamp(skb);
+
 	hci_send_to_control(skb, skip_sk);
 	kfree_skb(skb);