reproduce (this is a W=1 build):
        # https://github.com/ambarus/linux-0day/commit/f137b011b07dfa01eee237ebea7fb58a457a67a9
        git remote add ambarus https://github.com/ambarus/linux-0day
        git fetch --no-tags ambarus b4/gs101-otp
        git checkout f137b011b07dfa01eee237ebea7fb58a457a67a9

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=sh olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=sh SHELL=/bin/bash drivers/nvmem/