reproduce:
        git checkout c245a7a79602ccbee780c004c1e4abcda66aec32
        b4 shazam https://lore.kernel.org/r/20241206-topic-misc-da7280-convert-v2-1-1c3539f75604@linaro.org
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        # install Sphinx 2.4.4
        make htmldocs