reproduce (this is a W=1 build):
        git checkout becb95e45ef0dda9ffb35156d909d3da7a2789c3
        b4 shazam https://lore.kernel.org/r/20261013-gb-uart-transport-v3-4-81d0a8a1acf7@beagleboard.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=$HOME/0day COMPILER=clang-22 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-22 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 prepare