move to libcommon-cs: net init 1: rename to bsc_network_init

The gsm_network_init() function initializes a whole lot of BSC specific stuff.
Aiming to move some of it to libcommon-cs, first rename it to bsc_network_init().
This will retain the BSC specific stuff when the move is done.

Adjust all callers.

Future: osmo-cscn will call the more generic part and not the BSC specific
part.

Change-Id: I4816ae19374390fc5c64972f7cad2e9ec3d8bcc3
diff --git a/openbsc/src/ipaccess/ipaccess-config.c b/openbsc/src/ipaccess/ipaccess-config.c
index 3c2d6cc..06589f7 100644
--- a/openbsc/src/ipaccess/ipaccess-config.c
+++ b/openbsc/src/ipaccess/ipaccess-config.c
@@ -986,7 +986,7 @@
 	}
 	libosmo_abis_init(tall_ctx_config);
 
-	bsc_gsmnet = gsm_network_init(tall_bsc_ctx, 1, 1, NULL);
+	bsc_gsmnet = bsc_network_init(tall_bsc_ctx, 1, 1, NULL);
 	if (!bsc_gsmnet)
 		exit(1);