reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        git remote add robh https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git
        git fetch robh for-next
        git checkout robh/for-next
        b4 shazam https://lore.kernel.org/r/20250226152418.1132337-18-tommaso.merciai.xr@bp.renesas.com
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-18 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-18 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/clk/renesas/ drivers/gpu/drm/bridge/ drivers/gpu/drm/tiny/ drivers/hid/ drivers/iio/adc/ drivers/media/platform/renesas/rzg2l-cru/ drivers/power/supply/ drivers/staging/most/video/ drivers/tty/serial/ kernel/sched/ kernel/trace/ security/selinux/