reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/rogerq/linux/commit/b0c1f576f96f0081c0e2a0ccbd8ae3c7e6c02a88
        git remote add rogerq https://github.com/rogerq/linux
        git fetch --no-tags rogerq b4/am65-cpsw-multi-rx-j7-fix
        git checkout b0c1f576f96f0081c0e2a0ccbd8ae3c7e6c02a88
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/net/ethernet/ti/