nat: Fix the access-list-name command...

We have added two commands with the same name to the tree..
the second one should have been the BSC...
diff --git a/openbsc/src/nat/bsc_nat_vty.c b/openbsc/src/nat/bsc_nat_vty.c
index 22375a8..a747892 100644
--- a/openbsc/src/nat/bsc_nat_vty.c
+++ b/openbsc/src/nat/bsc_nat_vty.c
@@ -95,7 +95,7 @@
 	if (bsc->description)
 		vty_out(vty, "  description %s%s", bsc->description, VTY_NEWLINE);
 	if (bsc->acc_lst_name)
-		vty_out(vty, " access-list-name %s%s", bsc->acc_lst_name, VTY_NEWLINE);
+		vty_out(vty, "  access-list-name %s%s", bsc->acc_lst_name, VTY_NEWLINE);
 }
 
 static int config_write_bsc(struct vty *vty)
@@ -552,7 +552,7 @@
 	install_element(BSC_NODE, &cfg_bsc_lac_cmd);
 	install_element(BSC_NODE, &cfg_bsc_paging_cmd);
 	install_element(BSC_NODE, &cfg_bsc_desc_cmd);
-	install_element(NAT_NODE, &cfg_bsc_acc_lst_name_cmd);
+	install_element(BSC_NODE, &cfg_bsc_acc_lst_name_cmd);
 
 	mgcp_vty_init();