sgsn: Add boilerplate code for a SGSN test
diff --git a/openbsc/tests/atlocal.in b/openbsc/tests/atlocal.in
index 542a78e..3b03bb7 100644
--- a/openbsc/tests/atlocal.in
+++ b/openbsc/tests/atlocal.in
@@ -2,3 +2,4 @@
 enable_smpp_test='@osmo_ac_build_smpp@'
 enable_bsc_test='@osmo_ac_build_bsc@'
 enable_mgcp_transcoding_test='@osmo_ac_mgcp_transcoding@'
+enable_sgsn_test='@found_libgtp@'