reproduce (this is a W=1 build):
        # https://github.com/zen-kernel/zen-kernel/commit/d0b6bde752e9f31adb57b06fb0e3f05c47e99d94
        git remote add zen https://github.com/zen-kernel/zen-kernel
        git fetch --no-tags zen 6.19/zen-sauce
        git checkout d0b6bde752e9f31adb57b06fb0e3f05c47e99d94

        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=$HOME/0day COMPILER=gcc-9.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=nios2 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=nios2 SHELL=/bin/bash drivers/scsi/vhba/