add nk_io at24_eeprom driver

hc

2023-02-14 796a7ef0befd21e25c2b9e42f53a6d7a4421941d

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# md5 from https://pypi.python.org/pypi/flup/json, sha256 locally computed
md5 bc104a7444bfac36fc2146a356de4c11 flup-1.0.3.dev20161029.tar.gz
sha256 3dc5620b77a6a4cd0afb556626eb0ce85708e513f9c50dc5e982190e3d5f9e26 flup-1.0.3.dev20161029.tar.gz