Add header file with definitions for GSM TS 04.14 / 3GPP TS 44.014

Change-Id: I1f4fc2761b55a4f83544c1c3793ab67fec9fc120
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index 8fb9878..9613c4e 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -188,6 +188,8 @@
 gsm411_cp_cause_strs;
 gsm411_rp_cause_strs;
 
+gsm414_msgt_names;
+
 gsm48_att_tlvdef;
 gsm48_cc_msg_name;
 gsm48_rr_msg_name;