reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/98949d2e1e8bfc6849ee8ee049efd883ddd970ba
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Gr-goire-Layet/dt-bindings-serial-8250-aspeed-add-ast2600-and-aspeed-vuart-over-pci/20260818-102914
        git checkout 98949d2e1e8bfc6849ee8ee049efd883ddd970ba

        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=$HOME/0day COMPILER=gcc-16.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-16.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/tty/serial/8250/