tests: fix condition to run sgsn, oap, gtphub tests

Sponsored-by: On-Waves ehi
diff --git a/openbsc/tests/atlocal.in b/openbsc/tests/atlocal.in
index 7475f63..362bfa9 100644
--- a/openbsc/tests/atlocal.in
+++ b/openbsc/tests/atlocal.in
@@ -2,5 +2,6 @@
 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@'
-enable_gtphub_test='@found_libgtp@'
+enable_sgsn_test='@found_libgtp_and_libcares@'
+enable_oap_test='@found_libgtp_and_libcares@'
+enable_gtphub_test='@found_libgtp_and_libcares@'