STM32_HAL_LEGACY macro

@file stm32_hal_legacy.h @author MCD Application Team This file contains aliases definition for the STM32Cube HAL constants macros and functions maintained for legacy purpose. @attention Copyright (c) 2021 STMicroelectronics. All rights reserved. This software is licensed under terms that can be found in the LICENSE file in the root directory of this software component. If no LICENSE file comes with this software, it is provided AS-IS.