reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik.git/commit/?id=bc1d0a54a8f259daccf57996c2cfa35acd94593e
        git remote add linusw-nomadik https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik.git
        git fetch --no-tags linusw-nomadik b4/ux500-simple-sound
        git checkout bc1d0a54a8f259daccf57996c2cfa35acd94593e

        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=$HOME/0day COMPILER=gcc-8.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-8.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash dt_binding_check dtbs_check