add nk_io at24_eeprom driver

hc

2023-02-14 796a7ef0befd21e25c2b9e42f53a6d7a4421941d

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# Locally calculated after checking pgp signature
sha256 1a21322a10e2da9c0bd6a2a483b6e7ef8fa7f16efcab4c450fd73e7188f5fa94  exim-4.89.1.tar.xz