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

hw/bsp/stm32l476disco/stm32l476disco.c

@@ -26,8 +26,6 @@
 
 #include "../board.h"
 
-#include "stm32l4xx.h"
-#include "stm32l4xx_hal_conf.h"
 #include "stm32l4xx_hal.h"
 
 #define LED_PORT              GPIOB
@@ -118,6 +116,9 @@ static void SystemClock_Config(void)
 
 void board_init(void)
 {
+  SystemClock_Config();
+  all_rcc_clk_enable();
+
 #if CFG_TUSB_OS  == OPT_OS_NONE
   // 1ms tick timer
   SysTick_Config(SystemCoreClock / 1000);
@@ -126,10 +127,6 @@ void board_init(void)
   //NVIC_SetPriority(USB0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY );
 #endif
 
-  SystemClock_Config();
-  SystemCoreClockUpdate();
-  all_rcc_clk_enable();
-
   /* Enable Power Clock*/
   __HAL_RCC_PWR_CLK_ENABLE();