mgcp_vty: deprecate bind early command

The VTY command "bind early" is deprecated but it prints an error
message and the DEFUN is not set to DEFUN_DEPRECATED.

Change-Id: I594a87d2f63826a9d7b4f6a380586b08b3b79518
diff --git a/src/libosmo-mgcp/mgcp_vty.c b/src/libosmo-mgcp/mgcp_vty.c
index cc7c5b8..440452f 100644
--- a/src/libosmo-mgcp/mgcp_vty.c
+++ b/src/libosmo-mgcp/mgcp_vty.c
@@ -442,14 +442,13 @@
 	return CMD_SUCCESS;
 }
 
-DEFUN(cfg_mgcp_bind_early,
-      cfg_mgcp_bind_early_cmd,
-      "bind early (0|1)",
-      BIND_STR
-      "Bind local ports on start up\n" "Bind on demand\n" "Bind on startup\n")
+DEFUN_DEPRECATED(cfg_mgcp_bind_early,
+		 cfg_mgcp_bind_early_cmd,
+		 "bind early (0|1)",
+		 BIND_STR
+		 "Bind local ports on start up\n" "Bind on demand\n" "Bind on startup\n")
 {
-	vty_out(vty, "bind early is deprecated, remove it from the config.\n");
-	return CMD_WARNING;
+	return CMD_SUCCESS;
 }
 
 #define RTP_STR "RTP configuration\n"