dbus-pcap: Add SPDX header and copyright

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: Ia82f7799dd06fd8252174c32db983e68ff9d130a
diff --git a/amboar/obmc-scripts/dbus-pcap/dbus-pcap b/amboar/obmc-scripts/dbus-pcap/dbus-pcap
index 2c9bdd5..86c1493 100755
--- a/amboar/obmc-scripts/dbus-pcap/dbus-pcap
+++ b/amboar/obmc-scripts/dbus-pcap/dbus-pcap
@@ -1,5 +1,8 @@
 #!/usr/bin/python3
 
+# SPDX-License-Identifier: Apache-2.0
+# Copyright 2019 IBM Corp.
+
 from itertools import islice, cycle
 from collections import namedtuple
 from enum import Enum