BSSGP flow-control: various fixes
* add more comments on units of struct members
* make sure to parsre FC-BVC message correctly
* add error message in case user passes PDU larger than bucket size
* add new function to initialize flow control struct
diff --git a/src/gb/libosmogb.map b/src/gb/libosmogb.map
index 8e9f372..d0f76f8 100644
--- a/src/gb/libosmogb.map
+++ b/src/gb/libosmogb.map
@@ -3,6 +3,7 @@
bssgp_cause_str;
bssgp_create_cell_id;
bssgp_fc_in;
+bssgp_fc_init;
bssgp_fc_ms_init;
bssgp_msgb_alloc;
bssgp_msgb_tlli_put;