added config

buildroot/bin/opt_enable_adv

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+SED=$(which gsed || which sed)
+
+for opt in "$@" ; do
+  eval "${SED} -i 's/\/\/[[:blank:]]*\(#define \b${opt}\b\)/\1/g' Marlin/Configuration_adv.h"
+done