gsm/ipa: Add segmentation callback

Add segmentation callback to be used by the streaming backend of libosmo-netif

Related: OS#5753, OS#5751
Change-Id: I3a639e6896cc3b3fc8e9b2e1a58254710efa0d3f
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index 29bf94f..1e5a7b2 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -689,6 +689,7 @@
 ipa_ccm_id_resp_parse;
 ipa_ccm_make_id_resp;
 ipa_ccm_make_id_resp_from_req;
+ipa_segmentation_cb;
 ipa_msg_alloc;
 ipa_msg_recv;
 ipa_msg_recv_buffered;