Linkit one drivers and documentation

[Seeed_Seraphina]

@reivilo

The MediaTek Labs, in charge of the development of the LinkIt boards, has closed. The website and part of the files are available at the MediaTek Labs GitHub repositories .
负责 LinkIt 开发板的联发科实验室已经关闭。该网站和部分文件可在 MediaTek Labs GitHub 存储库 上找到。

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