1、【修改】运算方式，更加简洁易懂；
2、【修正】代码格式 tab、 LOG_D；
3、【增加】返回值；
4、【去除】bank1_flag和bank2_flag，改用bank_size判定。

support stm32f103vg

[bsp] fix UART DMA TX

Fixed wrong output information in core.c

[bsp/stm32] add pm support by cubemx tool

Upload at32 bsp first version.

rt_kprintf("alloc memery failed\n"); -> rt_kprintf("alloc memory failed\n");

Fixed typo 'rthread' in help infomation

rthread -> rtthread

[update] 修改了 stm32f407-atk-explorer mdk5 工程编译报错的bug

[Sensor] Add vendor info and sensor types for cmd

[bsp][stm32] add stm32f411-mini-system bsp

make clock_time.h available to C++

[driver][wlan] add raw frame send interface and Management frame filter interface

Raspi fix driver

[finsh]Fixed minor bug in finsh_compiler.c

Signed-off-by: chenyong <1521761801@qq.com>

    The code just clean the first member of array 'finsh_vm_stack', but it works well in the past years, 
            memset(&finsh_vm_stack[0], 0, sizeof(finsh_vm_stack[0]));
    Is it better to re-code as below, it will be more readable and robust:
            memset(&finsh_vm_stack[0], 0, sizeof(finsh_vm_stack));

fix raspi3-64 sdio driver

[bsp][synopsys] fix the PKG_EMBAC_BSP_PATH

the embARC_BSP package in env packages is changed
frome system to peripheral folder, this change should also to be fixed in the config files correspondingly.
Signed-off-by: NWatson Zeng <zhiwei@synopsys.com>