reproduce (this is a W=1 build):
        git checkout b96bcfba104c65db41378a04f5ccac186f79578f
        b4 shazam https://lore.kernel.org/r/20251223-mtk-post-blend-color-pipeline-v3-9-7d969f9a37a0@collabora.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=$HOME/0day COMPILER=gcc-12.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=openrisc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=openrisc SHELL=/bin/bash drivers/gpu/drm/