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/20260108080332.2341725-2-allen.lkml@gmail.com

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=um olddefconfig
        make W=1 O=build_dir ARCH=um SHELL=/bin/bash drivers/dma/mediatek/ drivers/dma/sf-pdma/ drivers/dma/stm32/