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/mmind/linux-rockchip.git/commit/?id=5324af2d029d47a39ce22ae1613e2753e5e372a2
        git remote add rockchip https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git
        git fetch --no-tags rockchip v6.15-armsoc/dts64
        git checkout 5324af2d029d47a39ce22ae1613e2753e5e372a2
        # 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 dtbs_check