Idea for a new section: what not to do

[HinTak]

respeaker/seeed-voicecard#213 fake copyright messages and redistribution rights for docs respeaker/seeed-voicecard#203

respeaker/seeed-voicecard#251 spinlock usage

[HinTak]

https://github.com/respeaker/seeed-voicecard/blob/ac2bf5f638e470c60b812b20af54b296aab8ab27/ac108.c#L1459 msleep

https://github.com/respeaker/seeed-voicecard/blob/6b4133b5f056fd0218f3ffd197df45fab2ae1ef7/wm8960.c#L871

https://github.com/respeaker/seeed-voicecard/blob/ac2bf5f638e470c60b812b20af54b296aab8ab27/ac101.c#L258

[HinTak]

Turd-polishing and closing before fixing

[HinTak]

Usage of mdelay