BSSMAP: add messages for inter-BSC and inter-MSC Handover

Change-Id: I9dac375331f6bea744769e973725d58e35f87226
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index 47f3b45..5bb189f 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -184,8 +184,12 @@
 gsm0808_create_reset_ack;
 gsm0808_create_sapi_reject;
 gsm0808_create_handover_required;
+gsm0808_create_handover_required_reject;
+gsm0808_create_handover_request;
 gsm0808_create_handover_request_ack;
+gsm0808_create_handover_command;
 gsm0808_create_handover_detect;
+gsm0808_create_handover_succeeded;
 gsm0808_create_handover_complete;
 gsm0808_create_handover_failure;
 gsm0808_create_handover_performed;