reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        git remote add bluetooth-next https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git
        git fetch bluetooth-next master
        git checkout bluetooth-next/master
        b4 shazam https://lore.kernel.org/r/20240606114321.30515-5-chris.lu@mediatek.com
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/