move gsm_bts_get_cbch() to gsm_data_shared() as its needed in osmo-bts
diff --git a/openbsc/include/openbsc/gsm_data.h b/openbsc/include/openbsc/gsm_data.h
index ae6757d..b278309 100644
--- a/openbsc/include/openbsc/gsm_data.h
+++ b/openbsc/include/openbsc/gsm_data.h
@@ -418,6 +418,7 @@
 struct gsm_bts *gsm_bts_alloc_register(struct gsm_network *net,
 					enum gsm_bts_type type,
 					uint8_t tsc, uint8_t bsic);
+
 void set_ts_e1link(struct gsm_bts_trx_ts *ts, uint8_t e1_nr,
 		   uint8_t e1_ts, uint8_t e1_ts_ss);