reproduce (this is a W=1 build):
        # https://github.com/gdamjan/linux/commit/6deed8dc0c1a824fc0ee6e2cef953c0747b0fbfe
        git remote add gdamjan https://github.com/gdamjan/linux
        git fetch --no-tags gdamjan v7.1/imx471
        git checkout 6deed8dc0c1a824fc0ee6e2cef953c0747b0fbfe

        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # clang-23 might not be officially released. Try a lower version if installation fails.
        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=$HOME/0day COMPILER=clang-23 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-23 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/media/i2c/ drivers/platform/arm64/