[media] v4l: vivi: support for dmabuf importing

This patch enhances VIVI driver with a support for importing a buffer
from DMABUF file descriptors.

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/platform/vivi.c

@@ -1302,7 +1302,7 @@ static int __init vivi_create_instance(int inst)
 	/* initialize queue */
 	q = &dev->vb_vidq;
 	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
+	q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF | VB2_READ;
 	q->drv_priv = dev;
 	q->buf_struct_size = sizeof(struct vivi_buffer);
 	q->ops = &vivi_video_qops;