libosmocore.map: Add two missing entries for gsmtap*2() API

Those functions were introduced in I51b3604ba79e42c474aa17007e7e308a12afcea8
but the recent introduction of libosmocore.map didn't list them

Change-Id: I4ac14aae13ff60c110444da989761cd1e86f8925
Fixes: I13169c00a59fb59513dfc598de5a71d094492422
diff --git a/src/core/libosmocore.map b/src/core/libosmocore.map
index 984046b..bd1b3d9 100644
--- a/src/core/libosmocore.map
+++ b/src/core/libosmocore.map
@@ -49,7 +49,9 @@
 gsmtap_source_add_sink_fd;
 gsmtap_source_free;
 gsmtap_source_init;
+gsmtap_source_init2;
 gsmtap_source_init_fd;
+gsmtap_source_init_fd2;
 gsmtap_type_names;
 log_add_target;
 log_category_name;