reproduce (this is a W=1 build):
        git checkout 590b221ed4256fd6c34d3dea77aa5bd6e741bbc1
        b4 shazam https://lore.kernel.org/r/20250917-rda8810pl-drivers-v1-6-9ca9184ca977@mainlining.org
        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=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash drivers/clk/ drivers/rtc/