_FFCONF macro

Portions COPYRIGHT 2017 STMicroelectronics Copyright (C) 2017, ChaN, all right reserved. Copyright (c) 2017 STMicroelectronics. All rights reserved. This software component is licensed by ST under Ultimate Liberty license SLA0044, the "License"; You may not use this file except in compliance with the License. You may obtain a copy of the License at: www.st.com/SLA0044