reproduce (this is a W=1 build):
        git checkout fe45352cd106ae41b5ad3f0066c2e54dbb2dfd70
        b4 shazam https://lore.kernel.org/r/20251022-add-rpmh-read-support-v2-3-5c7a8e4df601@oss.qualcomm.com

        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=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=i386 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/regulator/