ctrl: Link to libraries we use symbols from

Fixes:
dpkg-shlibdeps: warning: symbol vector_free used by debian/libosmoctrl0/usr/lib/libosmoctrl.so.0.0.0 found in none of the libraries
dpkg-shlibdeps: warning: symbol vector_set used by debian/libosmoctrl0/usr/lib/libosmoctrl.so.0.0.0 found in none of the libraries
dpkg-shlibdeps: warning: symbol vector_set_index used by debian/libosmoctrl0/usr/lib/libosmoctrl.so.0.0.0 found in none of the libraries
dpkg-shlibdeps: warning: symbol tall_vty_vec_ctx used by debian/libosmoctrl0/usr/lib/libosmoctrl.so.0.0.0 found in none of the libraries
dpkg-shlibdeps: warning: symbol ipa_msg_recv_buffered used by debian/libosmoctrl0/usr/lib/libosmoctrl.so.0.0.0 found in none of the libraries
dpkg-shlibdeps: warning: symbol cmd_free_strvec used by debian/libosmoctrl0/usr/lib/libosmoctrl.so.0.0.0 found in none of the libraries
dpkg-shlibdeps: warning: symbol vector_lookup used by debian/libosmoctrl0/usr/lib/libosmoctrl.so.0.0.0 found in none of the libraries
dpkg-shlibdeps: warning: symbol vector_lookup_ensure used by debian/libosmoctrl0/usr/lib/libosmoctrl.so.0.0.0 found in none of the libraries
dpkg-shlibdeps: warning: symbol cmd_make_strvec used by debian/libosmoctrl0/usr/lib/libosmoctrl.so.0.0.0 found in none of the libraries
dpkg-shlibdeps: warning: symbol vector_init used by debian/libosmoctrl0/usr/lib/libosmoctrl.so.0.0.0 found in none of the libraries
diff --git a/src/ctrl/Makefile.am b/src/ctrl/Makefile.am
index 610d75c..71eced5 100644
--- a/src/ctrl/Makefile.am
+++ b/src/ctrl/Makefile.am
@@ -9,4 +9,7 @@
 libosmoctrl_la_SOURCES = control_cmd.c control_if.c
 
 libosmoctrl_la_LDFLAGS = $(LTLDFLAGS_OSMOCTRL) -version-info $(LIBVERSION) -no-undefined
-libosmoctrl_la_LIBADD = $(top_builddir)/src/libosmocore.la
+libosmoctrl_la_LIBADD = \
+	$(top_builddir)/src/libosmocore.la \
+	$(top_builddir)/src/gsm/libosmogsm.la \
+	$(top_builddir)/src/vty/libosmovty.la