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

CH32V307 添加can驱动。
CAN1和CAN2均可以使用，而且调整好波特率

* [bsp][sconscript] 整理统一sconscript格式

* update

* update

* 修改部分菜单

* change again

* 修改RT_USING为BSP_USING

* Update SConscript

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

添加了 ch32v307 看门狗驱动，已在 ch32v307评估板验证；
修改了 rt-thread\bsp\wch\risc-v\ch32v307v-r1\board 目录下的 Kconfig 文件；
修改了 rt-thread\bsp\wch\risc-v\Libraries\ch32_drivers 目录下的 SConscript 文件；
添加了 rt-thread\bsp\wch\risc-v\Libraries\ch32_drivers 目录下的 drv_iwdt.c 文件；

* first copy

* [GD32][BSP]添加GD32303C-START开发板

* 更新yml文件

* 更新scons脚本

增加c28x芯片的pwm驱动
已经在TMS320F28379中通过测试
pwm设备框架增加如下方法：
#define PWM_CMD_SET_DEAD_TIME (RT_DEVICE_CTRL_BASE(PWM) + 8)
#define PWM_CMD_SET_PHASE (RT_DEVICE_CTRL_BASE(PWM) + 9)
#define PWM_CMD_ENABLE_IRQ (RT_DEVICE_CTRL_BASE(PWM) + 10)
#define PWM_CMD_DISABLE_IRQ (RT_DEVICE_CTRL_BASE(PWM) + 11)

bsp\stm32\libraries\HAL_Drivers\drv_rtc.c在STM32F10x上有一个“RTC首次上电时BKP时钟没使能”的问题。

STM32F10x要求：
写RTC Domain and RTC registers之前需要__HAL_RCC_BKP_CLK_ENABLE（详见：stm32f1xx_hal_rtc.c里面的##### Backup Domain Access #####）

问题分析：
1、RTC首次上电时：由于HAL_RTC_Init初始化之前没有使能BKP时钟，所以对RTC registers的初始化无效。
2、然后用date命令设置时间，调用到set_rtc_time_stamp也没有__HAL_RCC_BKP_CLK_ENABLE，所以HAL_RTCEx_BKUPWrite写的值无法真正永存于BKP，重启后就丢失。
最终导致：对于RTC首次上电的情况，每次重启后RTC_BKP_DR1里的值都不是BKUP_REG_DATA，导致永远无法调用到rt_rtc_f1_bkp_update()去使能BKP时钟。

解决办法：
参考STM32F10x_StdPeriph_Lib_V3.5.0\Project\STM32F10x_StdPeriph_Examples\RTC\Calendar\main.c里面的RTC_Configuration()同时打开RCC_APB1Periph_PWR和RCC_APB1Periph_BKP

* fix project to AC6

* add the segger_rtt function

* move Kconfig

* bsp beaglebone: add IAR template files and fix it's build error

ATTENTION:
project.* was generated by scons, so I add it to gitignore.
rtconfig.py *FLAGS located in "PLATFORM == 'iccarm'" are unverified and maybe wrong.
（我只是从STM32里面抄来，然后根据自己的理解改了一下，并没有验证这些参数的正确性，
我也不知道怎么用命令行调用这些参数来编译）

* bsp beaglebone: add beaglebone_ram.icf ROM address from uboot_cmd.txt

am335x_DDR.icf use 0x82000000, different to uboot_cmd.txt & gcc beaglebone_ram.lds,
the difference will easy cause later developer got below error:

=> go 0x80200000
## Starting application at 0x80200000 ...
undefined instruction
pc : [<8200956c>]	   lr : [<8ff62497>]
reloc pc : [<728a956c>]	   lr : [<80802497>]
sp : 8df37358  ip : 00000000	 fp : 00000002
r10: 8df4d448  r9 : 8df3feb8	 r8 : 8ffd30f8
r7 : 8ff78089  r6 : 00000002	 r5 : 80200000  r4 : 8df4d44c
r3 : 80200000  r2 : 8df4d44c	 r1 : 8df4d44c  r0 : 00000001
Flags: nzCv  IRQs off  FIQs on  Mode SVC_32
Code: 5dbffcdd bb9bdf7f abf85423 eff1f77f (7ed7daaf)
Resetting CPU ...

resetting ...

* libcpu am335x: context_iar.S rt_hw_context_switch: add thumb mode support

IAR new project defualt Processor mode is Thumb, this will cause user
easy occur the following error:
...
msh />Execption:
r00:0x8800aaa8 r01:0x802080c5 r02:0x00000000 r03:0x88009b4c
r04:0x00001000 r05:0x00000000 r06:0x00001403 r07:0x00100000
r08:0x00000000 r09:0x00000000 r10:0x0000000a
fp :0x0000000a ip :0x65687374
sp :0x00006c6c lr :0x0000008a pc :0x88008be0
cpsr:0x880001bc
software interrupt
shutdown...
(0) assertion failed at function:rt_hw_cpu_shutdown, line number:160

* bsp beaglebone: change IAR template.ewp code use Arm mode

Arm mode bin size will bigger than Thumb mode

* libcpu am335x: IAR: use rt_hw_cpu_dcache_enable instead of rt_cpu_dcache_enable

Reviewer mysterywolf say:
麻烦把rt_cpu_icache_enable 和 rt_cpu_dcache_enable, 统一改成 rt_hw_cpu_icache_enable 和 rt_hw_cpu_dcache_enable
rt_hw_cpu_icache_enable 和 rt_hw_cpu_dcache_enable 是其他bsp也是这么命名的 这是个命名统一的函数

* [fix] Fix simulator compilation warnings

* Update bsp/simulator/rtconfig_project.h
Co-authored-by: Man, Jianting (Meco) <920369182@qq.com>

Co-authored-by: NWayne Lin <wclin@nuvoton.com>

* [rtduino][stm32l475-pandora] 重新整理pinout

* [rtduino][bluepill] 整理pinout

* [rtduino][stm32-f401nucleo]整理pinout

* [rtduino][stm32-pandora] 整理pinout

* [rtduino][stm32f072]整理pinout

添加了ch32v307的adc驱动，已在ch32v307评估班上对adc1ch5进行了验证，并修改了kconfig以及scons脚本，可以成功编译以及使用

修复字符串比较错误

将__CC_ARM 替换成 __ARMCC_VERSION 用以支持AC6编译，通过gd32f303测试。

* bsp beaglebone: rerun menuconfg

* bsp beaglebone: add uart0 support

* bsp beaglebone: use uart0 as console

* bsp beaglebone: add heap init

fix rt_application_init() error:
(m != RT_NULL) assertion failed at function:rt_smem_alloc, line number:288

* bsp beaglebone: add mmu & interrupt init

must init mmu, otherwise no interrupt is generated, cause scheduler can't work.
I don't know why need mmu, just seen: bsp/rockchip/rk3568/driver/board.c

* libcpu am335x: reset interrupt controller before init vector

I think reset before init is more better

AM335X_StarterWare_02_00_01_01\system_config\armv7a\am335x\interrupt.c
IntAINTCInit()

* bsp beaglebone: full gpio driver support

* bsp beaglebone: add tftpboot way to uboot_cmd.txt

* bsp beaglebone: optimize am33xx_gpio_hdr, check irqstatus is the last one
Co-authored-by: YangZhongQing <vipox@qq.com>