* add references

* [dmodule] add <fcntl.h>

* [libcpu/aarch64] add smp support
* [libcpu/aarch64] rt_hw_trap_irq get irq instead of iar when using gicv2

When we create thread A by rt_thread_init but do
    not init the thread object,and then create thread
    B in the thread A,it maybe crash.

* [fix][components][utilities]adjust the order of compiler macros
Signed-off-by: NWillianChan <chentingwei@rt-thread.com>

* [modify][components][utilities]This PR complies with RT-Thread code specification
Signed-off-by: NWillianChan <chentingwei@rt-thread.com>

Signed-off-by: NWillianChan <chentingwei@rt-thread.com>

Signed-off-by: NWillianChan <chentingwei@rt-thread.com>

* [add] src/clock.c add hook for rt_tick_increase

* [fix] clock.c rt_tick_incerase hook function

* Update clock.c
Co-authored-by: Nguo <guozhanxin@rt-thread.com>

1. Add default rtconfig.h header.
2. Fix IP reset issue.
Co-authored-by: NWayne Lin <wclin@nuvoton.com>

* [bsp][essemi] update es32f36xx libraries.
* [bsp][essemi] add led_pin control.

* [bsp][art-pi] add spi lcd ili9488 driver
* [bsp][art-pi] support LVGL display
* [bsp][artpi] support LVGL indev
* [bsp][artpi] debug LVGL indev with ft6236
* [bsp][artpi] swap and invert touchpad coordinate
* [bsp][artpi] redundant declarations
* [bsp][artpi] indent BSP_USING_LVGL config
* [bsp][artpi] default build debug version
* [bsp][artpi] fix BSP_USING_LVGL Kconfig

原始提交PR：https://gitee.com/rtthread/rt-thread/pulls/372
提交者：https://gitee.com/wei-handong

----------------------

在TI公司C6000 DSP处理器上成功移植rt-thread操作系统；主要在libcpu/ti-dsp/c6x添加keystone架构底层代码，在bsp/ti-c6678添加bsp工程，该工程已在本人的开发板上成功运行

* 添加TMS320C6678处理器，keystone架构底层代码

* 添加支持中断栈部分代码，修改格式

* 修改汇编rt_hw_context_switch_to处关于时间槽的使用；修改格式

* 修改使用C语言构建任务栈帧，清除fls和ffs对<c6x.h>文件的依赖

* 修改bsp tms320c6678工程，并测试

* 删除依赖TI的KeyStone_common.c文件

* 添加编译说明

* update bsp/ti-tms320c6678/README.md.

* format code
Co-authored-by: NHuang bo <hb265419@126.com>
Co-authored-by: hdwei <1147479335@qq.com>
Co-authored-by: Nbernard <bernard.xiong@gmail.com>
Co-authored-by: Nrtthread-bot <48120998+rtthread-bot@users.noreply.github.com>
Co-authored-by: Meco Man <920369182@qq.com>

!372 [本次提交内容：在TI公司C6000 DSP处理器上成功移植rt-thread操作系统；主要在libcpu/ti-dsp/c6x添加keystone架构底层代码，在bsp/ti-c6678添加bsp工程，该工程已在本人的开发板上成功运行]
Merge pull request !372 from hdwei/hdwei

添加READM.md说明文档