lv_conf_internal: Check for LV_CONF_INCLUDE_SIMPLE before defining it.
#if defined __has_include
# if __has_include("lv_conf.h")
+# ifndef LV_CONF_INCLUDE_SIMPLE
# define LV_CONF_INCLUDE_SIMPLE
# endif
# endif
+#endif
/*If lv_conf.h is not skipped include it*/
#if !defined(LV_CONF_SKIP) && !defined(CONFIG_LV_CONF_SKIP)
