reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/tzungbi/chrome-platform.git/commit/?id=feed99729a7729442ce6bace637033f9bd78a78c
        git remote add tzungbi-chrome-platform https://git.kernel.org/pub/scm/linux/kernel/git/tzungbi/chrome-platform.git
        git fetch --no-tags tzungbi-chrome-platform dev3
        git checkout feed99729a7729442ce6bace637033f9bd78a78c
        # 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