Allow custom SPIFFS location in "demons" part of user_config.h
In case a custom SPIFFS location was defined above, don't overwrite it.
# define LUA_FLASH_STORE 0x0
#endif
+#ifndef SPIFFS_FIXED_LOCATION
#define SPIFFS_FIXED_LOCATION 0x0
+ // You'll rarely need to customize this, because nowadays
+ // it's usually overruled by the partition table anyway.
+#endif
#ifndef SPIFFS_MAX_FILESYSTEM_SIZE
# define SPIFFS_MAX_FILESYSTEM_SIZE 0xFFFFFFFF
#endif
