[stm32f072] support Arduino I2C and update readme

- add comments
- remove ARDUINO_PWM_HZ
- remove initVariant blank function
- support DAC0
- improve Kconfig of STM32L475 PANDORA
- add readme
- add i2c1 bus device

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

* Update ipc.c

Parameter name standardization
Co-authored-by: NStanley <stanleylwinn@gmail.com>

[update] RT-Thread Robot automatic submission

删除多余注释，另外确定了对于其他型号单片机的适应性

* Add Microchip SAM series MCU support for RT-Thread

Add Microchip SAM series MCU support for RT-Thread, including SAM Cortex-M0+, M4F and M7.

* Add bsp directory to ignored check list

Add bsp directory to ignored check list, add microchip /samc21/same54/same70 to workflows list

* remove STDIO definition and bug fix

1. remove STDIO code from Microchip official BSP. 2. bug fix of SAME70 hpl/hpl_usart.c, samc21&same54 hpl/hpl_sercom.c baudrate update interface.  3. Add RT-Thread standard STDIO implementation on Microchip SAM MCU.

* add CAN driver & example and script fix

Add CAN driver and example for SAMC21/SAME5x/SAME70 and fix rtconfig.py issue(unused space might result link error)

* Add Chinese version README

Add Chinese version README for SAMC21/E54/E70

fix comment on return value of `rt_hwcrypto_crc_update`

* Update n32_msp.c
* 添加SPI3的初始化代码
* 修正spi收发函数卡死在SPI_I2S_GetStatus的BUG

Merge pull request !489 from wang0huan/gitee_master

* fix:修复i2c异常问题

* add:格式化代码格式

[bsp/stm32] fix the bug of 'can' being stucked when short cricuit the canH and canL, change some wrong annotations

[stm32F4] adapt 168M frequency of 1M can baud, remember to add the define of BSP_USING_CAN168M in kconfig while using 168M frequency

Resolved feedbacks

dd descriptions for rt_mq_recv and rt_sem_take timeout parameters

* [kconfig] add 64bit default value for stack size. set tick HZ as 1000 by default

* 用RT_KSERVICE_USING_STDLIB_MEMXXX代替RT_KSERVICE_USING_STDLIB_MEMCP/MEMSET
将RT_KSERVICE_USING_STDLIB设置为默认开启

* 优化rt_kprintf支持longlong的能力，默认在64位CPU为开启状态
RT_PRINTF_LONGLONG命名不规范，更改为RT_KPRINTF_USING_LONGLONG

* fix commit error

* fix error

* 优化 system 函数

* RT_KSERVICE_USING_STDLIB_MEMXXX->RT_KSERVICE_USING_STDLIB_MEMORY

* [bsp] Make all warnings into errors with qemu-vexpress-a9 qemu-virt64-aarch64 and stm32f411-st-nucleo.
* [RTC] Fix compile errors

This reverts commit e68f934f.