lapdm: Create a simple test case to transmit data between both ends

This is testing the establishment of two ends (BTS, MS) one is in
the polling mode as used by osmo-bts. Transfer data between the two
ends. The sent data is not verified though. This should be followed
up soon.
diff --git a/tests/testsuite.at b/tests/testsuite.at
index a503c5d..6aae04d 100644
--- a/tests/testsuite.at
+++ b/tests/testsuite.at
@@ -59,3 +59,9 @@
 cat $abs_srcdir/auth/milenage_test.ok > expout
 AT_CHECK([$abs_top_builddir/tests/auth/milenage_test], [], [expout], [ignore])
 AT_CLEANUP
+
+AT_SETUP([lapd])
+AT_KEYWORDS([lapd])
+cat $abs_srcdir/lapd/lapd_test.ok > expout
+AT_CHECK([$abs_top_builddir/tests/lapd/lapd_test], [], [expout], [ignore])
+AT_CLEANUP