reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git/commit/?id=165e8cc3cfec9ef51f3376b0d49b115294f34f3b
        git remote add staging https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
        git fetch --no-tags staging staging-next
        git checkout 165e8cc3cfec9ef51f3376b0d49b115294f34f3b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/staging/gpib/ines/ drivers/staging/gpib/nec7210/ drivers/staging/gpib/ni_usb/ drivers/staging/gpib/pc2/ drivers/staging/gpib/tnt4882/