add ATH9000 M.2 WIFI driver

hc

2024-05-09 b9d5c334faa47a75f1f28e72d203fc0334e8471d

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# Locally computed:
sha256 f1e7067aac5b62b67b8b6e4c517990277804339ac16065eb13c731ff909ae46f broadcom-wl-5.100.138.tar.bz2
sha256 26a8c370f48fc129d0731cfd751c36cae1419b0bc8ca35781126744e60eae009 broadcom-wl-5.10.56.27.3_mipsel.tar.bz2