reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux.git/commit/?id=4ce4a46cdb2404bcd53ca58a18aeda673f37fbe9
        git remote add conor https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux.git
        git fetch --no-tags conor riscv-dt-for-next
        git checkout 4ce4a46cdb2404bcd53ca58a18aeda673f37fbe9

        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=$HOME/0day COMPILER=gcc-13.4.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.4.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash dt_binding_check dtbs_check