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/jmondi/linux.git/commit/?id=e816c18ae317e9fef655662b2187f72f1cd00f2f
        git remote add jmondi https://git.kernel.org/pub/scm/linux/kernel/git/jmondi/linux.git
        git fetch --no-tags jmondi pispbe/media-staging/be-upstream
        git checkout e816c18ae317e9fef655662b2187f72f1cd00f2f
        # 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