log CTRL bind address and port

Log 'CTRL at 1.2.3.4 5678' from ctrl_interface_setup*. All callers can now drop
any extra 'CTRL at 1.2.3.4 5678' logging.

Change-Id: If449d0514e3d0cc1b346d7452194d931aa090166
diff --git a/src/ctrl/control_if.c b/src/ctrl/control_if.c
index 05f6c76..2ffc251 100644
--- a/src/ctrl/control_if.c
+++ b/src/ctrl/control_if.c
@@ -669,11 +669,14 @@
 	if (ret)
 		goto err_vec;
 
+	LOGP(DLCTRL, LOGL_NOTICE, "CTRL at %s %u\n", bind_addr, port);
 	return ctrl;
 err_vec:
 	vector_free(ctrl_node_vec);
 	ctrl_node_vec = NULL;
 err:
+	LOGP(DLCTRL, LOGL_ERROR, "Cannot bind CTRL at %s %u\n",
+	     bind_addr, port);
 	talloc_free(ctrl);
 	return NULL;
 }