Merge pull request #2101 from jamike/fix_build_disco_F303VC

[DISCO_F303VC] : fix build issue

Author: 0xc0170

hal/targets/cmsis/TARGET_STM/TARGET_STM32F3/TARGET_DISCO_F303VC/stm32f3xx.h

@@ -117,7 +117,7 @@
    In this case, these drivers will not be included and the application code will 
    be based on direct access to peripherals registers 
    */
-  /*#define USE_HAL_DRIVER */
+#define USE_HAL_DRIVER
 #endif /* USE_HAL_DRIVER */
 
 /**