reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        git remote add hverkuil-media-tree git://linuxtv.org/hverkuil/media_tree.git
        git fetch --no-tags hverkuil-media-tree for-v6.11c
        git checkout dce30a66120fa092d28e2741f0890a5738b32fda
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm olddefconfig
        ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash dtbs_check