drm/amdgpu: note that we can handle peer2peer DMA-buf

Importing should work out of the box.
Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/359293

drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c

@@ -514,6 +514,7 @@ amdgpu_dma_buf_move_notify(struct dma_buf_attachment *attach)
 }
 
 static const struct dma_buf_attach_ops amdgpu_dma_buf_attach_ops = {
+	.allow_peer2peer = true,
 	.move_notify = amdgpu_dma_buf_move_notify
 };