reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        git remote add geert-renesas-devel https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git
        git fetch geert-renesas-devel next
        git checkout geert-renesas-devel/next
        b4 shazam https://lore.kernel.org/r/3259f4906e20ea626dcd45b7dd310155570b399c.1720430758.git.geert+renesas@glider.be
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
        ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash dtbs_check