reproduce (this is a W=1 build):
        # https://github.com/plbossart/sound/commit/be656d5ae2641105c22b18264a92411b5ff0e106
        git remote add plbossart-sound https://github.com/plbossart/sound
        git fetch --no-tags plbossart-sound sdw/enable-interrupt-after-power-up
        git checkout be656d5ae2641105c22b18264a92411b5ff0e106
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/soundwire/