reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git/commit/?id=77c2336923d4a7f24d717ae22128e5cb65162650
        git remote add geert-renesas-drivers https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git
        git fetch --no-tags geert-renesas-drivers master
        git checkout 77c2336923d4a7f24d717ae22128e5cb65162650

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-8.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-8.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash drivers/gpu/drm/xe/