gsm: Add APN conversion functions
These functions are currently part of openbsc but also needed by
other projects.
The function have been renamed as follows:
gprs_apn_to_str -> osmo_apn_to_str
gprs_str_to_apn -> osmo_apn_from_str
Sponsored-by: On-Waves ehf
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index 917a77d..7eebe7f 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -270,6 +270,8 @@
osmo_apn_qualify;
osmo_apn_qualify_from_imsi;
+osmo_apn_to_str;
+osmo_apn_from_str;
local: *;
};