* Microchip SAM MCU BSP update and add ethernet driver
1. Update Microchip SAM MCU BSP, add I2C, GMAC, ADC driver support. 2. Add ethernet driver support of SAM MCU for RT-Thread.
* Add GMAC and I2C driver support
1. Update MCU BSP to support I2C/ADC/GMAC peripherals. 2. Add I2C and ethernet driver and LWIP support. 3. Update serial driver.
* Add I2C driver and move some files to the common folder
1. Add I2C driver. 2. Move the same drivers and demo code to same folder to reduce duplicated code.
* 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
Meco Man
Kevin Liu