reproduce (this is a W=1 build):
        # https://github.com/masneyb/linux/commit/e2eec03ed313a8180ebe4eb9e32a6b8429f804a5
        git remote add masneyb https://github.com/masneyb/linux
        git fetch --no-tags masneyb clk-misc-round-two-for-v7.3
        git checkout e2eec03ed313a8180ebe4eb9e32a6b8429f804a5

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/pmdomain/