sorry, miss out other two parts.

Update portserial_m.c

add macro to aviod compile error with:
rt_pin_mode(MODBUS_MASTER_RT_CONTROL_PIN_INDEX, PIN_MODE_OUTPUT);

[bsp][stm32f4xx-HAL] Add uart3 driver

[Kernel] Fix the compiling warning

Move configs of VBUS to Kconfig, delete related head files in the bsp…

Remove DFS dependencies in the SAL

Add query and unregistered protocol family functions，format code

[bsp/ls1cdev]修复以太网驱动发送字节丢失问题

[BSP] Update raspi2 README.md

[bsp][raspi2] add raspberry pi 2 support

[component][ymodem] Fix compilation warning in MDK

Signed-off-by: NMurphyZhao <d2014zjt@163.com>

[src][timer.c]:modify -RT_EOK to RT_EOK

Fix sfud

[net][at] Delete AT Client port function

[net][at] Modify the AT client initialization process, delete AT sock…