debian/copyright: Add missing file Utils.* to LGPL-2.1+ list

Change-Id: I36b8b8be48ae8676688786f39008d08b61011ede
diff --git a/debian/copyright b/debian/copyright
index 208eacd..4a5d3c1 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -14,6 +14,8 @@
        Transceiver52M/arch/common/*
        Transceiver52M/Resampler.cpp
        Transceiver52M/Resampler.h
+       Transceiver52M/Utils.cpp
+       Transceiver52M/Utils.h
        Transceiver52M/osmo-trx.cpp
 Copyright: 2012-2013 Thomas Tsou <tom@tsou.cc>
 License: LGPL-2.1+