reproduce:
        git remote add sre-power-supply https://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply.git
        git fetch sre-power-supply for-next
        git checkout sre-power-supply/for-next
        b4 shazam https://lore.kernel.org/r/20240815192848.3489d3e1@5400
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        # install Sphinx 2.4.4
        make htmldocs