reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        git remote add chrome-platform https://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux.git
        git fetch chrome-platform for-next
        git checkout chrome-platform/for-next
        b4 shazam https://lore.kernel.org/r/6cfb5bae79c153c54da298c396adb8a28b5e785a.1749734094.git.michal.gorlas@9elements.com
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=sh olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=sh SHELL=/bin/bash drivers/firmware/google/