reproduce (this is a W=1 build):
        # https://github.com/rclaveau-tech/linux-khadas/commit/13dd4bece0271670a4b47d9493e2746ff695b3e1
        git remote add rclaveau https://github.com/rclaveau-tech/linux-khadas.git
        git fetch --no-tags rclaveau b4/add-adla_npu-t7-vim4
        git checkout 13dd4bece0271670a4b47d9493e2746ff695b3e1

        # clang-23 might not be officially released. Try a lower version if installation fails.
        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=$HOME/0day COMPILER=clang-23 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-23 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/accel/