reproduce (this is a W=1 build):
        git remote add chrome-platform https://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux.git
        git fetch chrome-platform for-firmware-next
        git checkout chrome-platform/for-firmware-next
        b4 shazam https://lore.kernel.org/r/fc251d6935c1cfc39d7a31d3cfe735d31a0371d1.1719531519.git.dnojiri@chromium.org
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/platform/chrome/