debian: added libosip2 to build dependencies
diff --git a/debian/control b/debian/control
index 11f864d..672d32e 100644
--- a/debian/control
+++ b/debian/control
@@ -16,7 +16,8 @@
                libpcap-dev,
                libssl-dev,
                libc-ares-dev,
-               libsmpp34-dev
+               libsmpp34-dev,
+               libosip2-dev
 Standards-Version: 3.9.8
 Vcs-Git: git://bs11-abis.gnumonks.org/openbsc.git
 Vcs-Browser: http://openbsc.osmocom.org/trac/browser