reproduce (this is a W=1 build):
        git remote add vkoul-dmaengine https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git
        git fetch vkoul-dmaengine next
        git checkout vkoul-dmaengine/next
        b4 shazam https://lore.kernel.org/r/20250903073059.2151837-3-quic_jseerapu@quicinc.com
        # 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/i2c/busses/