reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm.git/commit/?id=ffdca02d427a25b04a6985bcf139ce7602ccc046
        git remote add ulfh-pm https://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm.git
        git fetch --no-tags ulfh-pm next
        git checkout ffdca02d427a25b04a6985bcf139ce7602ccc046

        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=$HOME/0day COMPILER=gcc-16.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-16.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash drivers/pmdomain/starfive/