STM32F7: Unconditionally enable QSPI workarounds

On the STM32769NI at least this patch is required for stable QSPI use.
Enable it uncondtionally in case other boards need it too.

Further discussions:

ARMmbed#10049
ARMmbed#15108

STMicroelectronics/STM32CubeF7#52
STMicroelectronics/STM32CubeF7#82

targets/TARGET_STM/TARGET_STM32F7/STM32Cube_FW/STM32F7xx_HAL_Driver/stm32f7xx_hal_qspi.c

@@ -571,10 +571,8 @@ void HAL_QSPI_IRQHandler(QSPI_HandleTypeDef *hqspi)
         __HAL_DMA_DISABLE(hqspi->hdma);
       }
 
-#if  defined(QSPI1_V1_0)
       /* Clear Busy bit */
       HAL_QSPI_Abort_IT(hqspi);
-#endif
 
       /* Change state of QSPI */
       hqspi->State = HAL_QSPI_STATE_READY;
@@ -616,10 +614,8 @@ void HAL_QSPI_IRQHandler(QSPI_HandleTypeDef *hqspi)
         }
       }
 
-#if  defined(QSPI1_V1_0)
       /* Workaround - Extra data written in the FIFO at the end of a read transfer */
       HAL_QSPI_Abort_IT(hqspi);
-#endif
 
       /* Change state of QSPI */
       hqspi->State = HAL_QSPI_STATE_READY;
@@ -1021,10 +1017,8 @@ HAL_StatusTypeDef HAL_QSPI_Transmit(QSPI_HandleTypeDef *hqspi, uint8_t *pData, u
           /* Clear Transfer Complete bit */
           __HAL_QSPI_CLEAR_FLAG(hqspi, QSPI_FLAG_TC);
 
-#if  defined(QSPI1_V1_0)
           /* Clear Busy bit */
           status = HAL_QSPI_Abort(hqspi);
-#endif
         }
       }
 
@@ -1112,10 +1106,8 @@ HAL_StatusTypeDef HAL_QSPI_Receive(QSPI_HandleTypeDef *hqspi, uint8_t *pData, ui
           /* Clear Transfer Complete bit */
           __HAL_QSPI_CLEAR_FLAG(hqspi, QSPI_FLAG_TC);
 
-#if  defined(QSPI1_V1_0)
           /* Workaround - Extra data written in the FIFO at the end of a read transfer */
           status = HAL_QSPI_Abort(hqspi);
-#endif
         }
       }