cosmetic: rename struct osmo_msc_data to bsc_msc_data

With the OsmoMSC program coming up, the name osmo_msc_data becomes even
more confusing than it already is. Clearly indicate it as libbsc's data of
a remote MSC by prefixing with bsc_.

Also, the Osmocom community has in the meantime agreed to have the osmo_
prefix only in libosmocore, to avoid naming conflicts in case things are
moved there. So while renaming anyway, also drop the osmo_ prefix.

Change-Id: I0dfbcb7d1a579211180f71319982820d8700afab
diff --git a/openbsc/src/osmo-bsc/osmo_bsc_main.c b/openbsc/src/osmo-bsc/osmo_bsc_main.c
index 982f471..2f0b96d 100644
--- a/openbsc/src/osmo-bsc/osmo_bsc_main.c
+++ b/openbsc/src/osmo-bsc/osmo_bsc_main.c
@@ -156,7 +156,7 @@
 extern int bsc_shutdown_net(struct gsm_network *net);
 static void signal_handler(int signal)
 {
-	struct osmo_msc_data *msc;
+	struct bsc_msc_data *msc;
 
 	fprintf(stdout, "signal %u received\n", signal);
 
@@ -187,7 +187,7 @@
 
 int main(int argc, char **argv)
 {
-	struct osmo_msc_data *msc;
+	struct bsc_msc_data *msc;
 	struct osmo_bsc_data *data;
 	int rc;