reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/Broadcom/stblinux/commit/f66b382affd8fdecc8731832f722ffe1b68c822c
        git remote add broadcom-stblinux https://github.com/Broadcom/stblinux
        git fetch --no-tags broadcom-stblinux devicetree-arm64/next
        git checkout f66b382affd8fdecc8731832f722ffe1b68c822c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash