reproduce (this is a W=1 build):
        # https://github.com/morimoto/linux/commit/de5097766b0cc54a70e18603d4d045a7e12b37a0
        git remote add morimoto https://github.com/morimoto/linux
        git fetch --no-tags morimoto renesas-bsp/v6.1.71-2024-01-09-5
        git checkout de5097766b0cc54a70e18603d4d045a7e12b37a0
        # 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/pci/controller/dwc/