gpio: virtio: reorder fields to reduce struct padding

Reorder struct virtio_gpio_line fields to place the DMA buffers
(req/res) last.

This eliminates the padding from aligning struct size on
ARCH_DMA_MINALIGN.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Message-ID: <CAMRc=MeTW7rTVBYBub5CL6-xSWKYOUtN7UN6cH12Or_K7PrAGQ@mail.gmail.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
1 file changed