reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394.git/commit/?id=67a5a58c04438e13db391249330bb5e43cecf5fb
        git remote add ieee1394-linux1394 https://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394.git
        git fetch --no-tags ieee1394-linux1394 for-next
        git checkout 67a5a58c04438e13db391249330bb5e43cecf5fb
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=nios2 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=nios2 SHELL=/bin/bash drivers/firewire/