add bsp n32g43xcl-stb,n32g45xcl-stb,n32g45xml-stb,n32g45xrl-stb,n32g457qel-stb,n32l40xcl-stb,n32l43xml-stb,n32l43xrl-stb,n32l436_evb,n32wb45xl-evb

* [ch32v307] update Chinese readme

* add English readme

* [bsp/stm32] 将spi DMA传输更改为阻塞线程方式

* Update bsp/stm32/libraries/HAL_Drivers/drv_spi.h
Co-authored-by: Man, Jianting (Meco) <920369182@qq.com>

ARC: Minor port updates

In [1] we prefixed ARC Timer functions with "arc_"
and now we need to accommodate that change in RT-Thread
accordingly.

[1] https://github.com/foss-for-synopsys-dwc-arc-processors/embarc_bsp/commit/86a03d4bf99c8afad68c4c6a5941cda7a41dd4fe

In Python 3.x "print" is a function, not a command,
thus it requires braces around its arguments.

Otherwise build system fails to proceed.

* [bsp][ch32v307]添加了 pwm 驱动

1. 在c28x文件目录上一层再套一层文件夹ti，目前28379的项目路径为rt-thread\bsp\ti\c28x\tms320f28379d
2. 新增adc驱动与kconfig配置

* [add] 新增README文档说明

瑞萨RA6M4开发板对segger_rtt使用通知

* Update README.md
Co-authored-by: Man, Jianting (Meco) <920369182@qq.com>

1. DDR timing setting.
2. README.md
3. Remove unused files.

当seek到文件的位置和当前位置相同时，不需要调用dfs_file_lseek()函数，直接返回当前位置即可。
同时，以lseek(fd,0,SEEK_CUR)的方式执行函数可以返回文件当前读去位置，可以实现
ftell()的功能.
以lseek(fd,0,SEEK_CUR)的方式执行函数返回文件当前位置，实现ftell()的功能时不用调用dfs_file_lseek()函数，提高效率；seek(fd,0,SEEK_CUR)本来就能返回当前位置。

When detecting all SDIO devices fails, it is also necessary to return information

1. 增加PWM模块的配置kconfig代码
2. 调整目录结构，新增c28x文件夹，将原有tms320f28379的porting移动至c28x文件夹下，通用设备驱动移动至c28x/libraries下
3. 增加gpio驱动代码以及外部中断触发驱动代码

目前已经在tms320f28379上通过测试

The RT_ASSERT(obj != object) line is only compiled for debug mode.
But the rt_enter/exit_critical causes the compiler not to optimize
at least these 2 calls, even if it could optimize out the whole loop,
because the rt_list_entry function has no side effect, and RT_ASSET
is a no-operation in release mode. So this patch fixes this:
- no warnings anymore
- better speed in release mode