add aithinker audio board AC101 driver (AUD-1303)#340

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xuhongv wants to merge 3 commits intoespressif:masterfrom xuhongv:master

+1,185-2

Commits on Feb 1, 2020

add aithinker driver
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Commits on Feb 3, 2020

add ac101 driver
xuhongv
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Commits on Feb 21, 2020

Merge branch 'master' of https://github.com/espressif/esp-adf
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