Add two buildroot configuration files to build a minimal Linux
environment for the Sipeed MAIXDUINO board. The configurations are:
* sipeed_maixduino_defconfig: Build a bootable kernel image with an
embedded initramfs root file system. The image built can be flashed to
the board as is and does not require a boot loader. This configuration
uses the tiny busybox configuration defined in
board/canaan/k210-soc/busybox-tiny.config.
* sipeed_maixduino_sdcard_defconfig: Build a kernel image with a root
file system on the SD card and using U-Boot as the boot loader. This
uses the default busybox minimal configuration.
Both configurations also enable the kflash and pyserial-miniterm host
tools for flashing image files to the board and opening a terminal
console.
The readme.txt file documents how to build and boot the Sipeed MAIXDUINO
board with these configurations.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>