reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/gdamjan/linux/commit/90640d505b4f1fe8958277855c11d0cfdd0c5e1f
        git remote add gdamjan https://github.com/gdamjan/linux
        git fetch --no-tags gdamjan wip/ipu7-imx471
        git checkout 90640d505b4f1fe8958277855c11d0cfdd0c5e1f
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/media/pci/intel/ipu7/