Modify include of HAL, and remove CMSIS clock configuration code, and implement UART for STM32F407Disco

hw/bsp/stm32f303disco/stm32f303disco.c

@@ -26,8 +26,7 @@
 
 #include "../board.h"
 
-#include "stm32f3xx.h"
-#include "stm32f3xx_hal_conf.h"
+#include "stm32f3xx_hal.h"
 
 #define LED_PORT              GPIOE
 #define LED_PIN               GPIO_PIN_9
@@ -89,16 +88,13 @@ static void SystemClock_Config(void)
 
 void board_init(void)
 {
+  SystemClock_Config();
+
   #if CFG_TUSB_OS  == OPT_OS_NONE
   // 1ms tick timer
   SysTick_Config(SystemCoreClock / 1000);
   #endif
 
-  SystemClock_Config();
-
-  // Notify runtime of frequency change.
-  SystemCoreClockUpdate();
-
   // LED
   __HAL_RCC_GPIOE_CLK_ENABLE();
   GPIO_InitTypeDef  GPIO_InitStruct;