split off osmo-bsc: remove files, apply build

Change-Id: I64d84c52f6e38e98144eb9be8f0ab82e0e1f6cca
diff --git a/include/openbsc/bsc_api.h b/include/openbsc/bsc_api.h
index 40068d6..6ee0562 100644
--- a/include/openbsc/bsc_api.h
+++ b/include/openbsc/bsc_api.h
@@ -55,4 +55,5 @@
 		 unsigned int mi_len, uint8_t *mi, int chan_type);
 int gsm0808_clear(struct gsm_subscriber_connection *conn);
 
+int gsm0408_rcvmsg(struct msgb *msg, uint8_t link_id);
 #endif