* 优化imxrt的BSP下面的applications的Sconsript脚本

* add import os for sconscript in imxrt

* Use FreeRTOS wrapper

* Add console driver

* Add patch, .config. Update readme.

* Change date

* 对接RTdunio

https://github.com/RT-Thread/rt-thread/issues/6106
https://github.com/RT-Thread/rt-thread/issues/4467#issuecomment-850814143

* [document] Fix the doxygen file

[fix]mimxrt1170 Qspi flash bootup problems by loss of external flash conf and ivt header.
[add]green light instead printf on main.c.

* [kernel][timer] fixed bug serial_v2 驱动问题，导致所有写入都使用阻塞方式写入

* [simulator] fix some warnings

comes from https://github.com/RT-Thread/rt-thread/pull/5791

* [simulator] update kconfig
Co-authored-by: Nguozhanxin <guozhanxin@rt-thread.com>

* 添加hc32f460系列外设WDT驱动

* format kconfig

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

* Fix some compilation warning

* 补充修正一些数据类型的使用错误
Co-authored-by: Meco Man <920369182@qq.com>

* [bsp/raspi3-32] fix some bug of funtion '__rt_ffs'

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

* ch569w-evt : add spi master driver, SPI0 tested

* Update bsp/wch/risc-v/ch569w-evt/board/Kconfig

* Update bsp/wch/risc-v/ch569w-evt/board/Kconfig
Co-authored-by: Man, Jianting (Meco) <920369182@qq.com>

* allow setting optional url for packages via envvar.

* clean up left over

* simplify code as suggested by Bernard (thanks)

* fix typo (envvar name should be all upper case)

* [bsp][stm32] f407-robomaster-c板, 添加stm32定时器8pwm默认配置

* tab -> space

* 取消DFS选定
Co-authored-by: Meco Man <920369182@qq.com>

修改 F1/F4 配置文件uart改为uart1。
修改 F1/F4 main 打印内容。

WCH CH569W-R0-1v0 evt board bsp port, first version

dev/test under Ubuntu 20.04
toolchain from MounRiver_Studio_Community_Linux_x64_V120

tested drivers : SysTick, gpio, gpio interrupt, uart1 (RX interrupt, TX polling)

libcpu/risc-v/SConscript :
group includes rtconfig.CPU only if folder exists

libcpu/risc-v/common/cpuport.c/rt_hw_context_switch_interrupt() :
make it RT_WEAK for customization

Fix BSP bugs:
-Added Touch INT GPIO Init code to pin_mux.c
-Added new delay code for touch/video driver, using the rt-thread delay, in touchpad.c/.h

* [bsp/qemu-virt64-aarch64] RTC add hard alarm support

* [bsp/qemu-virt64-aarch64] Fixup VirtIO-GPU init buffer fail by cpu out-of-order execution

* [bsp/qemu-virt64-aarch64] Fixup VirtIO-NET transmit payload split
Add Virtio-GPU cursor demo