[stm32] add missing void
@@ -164,7 +164,7 @@ void rt_hw_us_delay(rt_uint32_t us)
/**
* This function will initial STM32 board.
*/
-RT_WEAK void rt_hw_board_init()
+RT_WEAK void rt_hw_board_init(void)
{
#ifdef BSP_SCB_ENABLE_I_CACHE
/* Enable I-Cache---------------------------------------------------------*/
