reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux.git/commit/?id=0430bf9bc1ac068c8b8c540eb93e5751872efc51
        git remote add i3c https://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux.git
        git fetch --no-tags i3c i3c/next
        git checkout 0430bf9bc1ac068c8b8c540eb93e5751872efc51
        # 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/i3c/master/