reproduce:
        git checkout c6bb982894b51c0ebaf94bbeb55ccbd1d4145a22
        b4 shazam https://lore.kernel.org/r/20251216064926.15817-4-muhammadamirulasyraf.mohamadjamian@altera.com
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        # pip install -r Documentation/sphinx/requirements.txt
        make htmldocs