ctrl: Mark function as static

Also move it more towards the end, where it is more expected as usually
done in ctrl/vty code.

Change-Id: Ieb956fb855752cfbe83d11aa0326685229a115e3
diff --git a/src/ctrl.c b/src/ctrl.c
index b78be12..37177c5 100644
--- a/src/ctrl.c
+++ b/src/ctrl.c
@@ -351,19 +351,6 @@
 	return set_subscr_cs_ps_enabled(cmd, data, false);
 }
 
-int hlr_ctrl_cmds_install()
-{
-	int rc = 0;
-
-	rc |= ctrl_cmd_install(CTRL_NODE_SUBSCR_BY, &cmd_subscr_info);
-	rc |= ctrl_cmd_install(CTRL_NODE_SUBSCR_BY, &cmd_subscr_info_aud);
-	rc |= ctrl_cmd_install(CTRL_NODE_SUBSCR_BY, &cmd_subscr_info_all);
-	rc |= ctrl_cmd_install(CTRL_NODE_SUBSCR_BY, &cmd_subscr_ps_enabled);
-	rc |= ctrl_cmd_install(CTRL_NODE_SUBSCR_BY, &cmd_subscr_cs_enabled);
-
-	return rc;
-}
-
 static int hlr_ctrl_node_lookup(void *data, vector vline, int *node_type,
 				void **node_data, int *i)
 {
@@ -389,6 +376,19 @@
 	return 1;
 }
 
+static int hlr_ctrl_cmds_install()
+{
+	int rc = 0;
+
+	rc |= ctrl_cmd_install(CTRL_NODE_SUBSCR_BY, &cmd_subscr_info);
+	rc |= ctrl_cmd_install(CTRL_NODE_SUBSCR_BY, &cmd_subscr_info_aud);
+	rc |= ctrl_cmd_install(CTRL_NODE_SUBSCR_BY, &cmd_subscr_info_all);
+	rc |= ctrl_cmd_install(CTRL_NODE_SUBSCR_BY, &cmd_subscr_ps_enabled);
+	rc |= ctrl_cmd_install(CTRL_NODE_SUBSCR_BY, &cmd_subscr_cs_enabled);
+
+	return rc;
+}
+
 struct ctrl_handle *hlr_controlif_setup(struct hlr *hlr)
 {
 	int rc;