gsm0480: Add USSD format functions to libosmocore
These routines come from OpenBSC, the msgb_wrap_* functions
belong to Mike Haben, the rest is mine. The msgb allocation
is compatible to the GSM48 allocation in OpenBSC.
diff --git a/include/osmocore/gsm0480.h b/include/osmocore/gsm0480.h
new file mode 100644
index 0000000..52592f7
--- /dev/null
+++ b/include/osmocore/gsm0480.h
@@ -0,0 +1,12 @@
+#ifndef gsm0480_h
+#define gsm0480_h
+
+#include "msgb.h"
+
+struct msgb *gsm0480_create_unstructuredSS_Notify(int alertPattern, const char *text);
+struct msgb *gsm0480_create_notifySS(const char *text);
+
+int gsm0480_wrap_invoke(struct msgb *msg, int op, int link_id);
+int gsm0480_wrap_facility(struct msgb *msg);
+
+#endif