reproduce (this is a W=1 build):
        # https://github.com/thesofproject/linux/commit/3e55a76d727eddf6b3bad82139a6788172168a01
        git remote add thesofproject https://github.com/thesofproject/linux
        git fetch --no-tags thesofproject topic/sof-dev
        git checkout 3e55a76d727eddf6b3bad82139a6788172168a01
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash