drm/nouveau/radeon: add static const to the dma-buf ops.

Reported-by: wfg@linux.intel.com
Signed-off-by: NDave Airlie <airlied@redhat.com>

drivers/gpu/drm/nouveau/nouveau_prime.c

@@ -61,7 +61,7 @@ static void nouveau_gem_kunmap(struct dma_buf *dma_buf, unsigned long page_num,
 
 }
 
-struct dma_buf_ops nouveau_dmabuf_ops =  {
+static const struct dma_buf_ops nouveau_dmabuf_ops =  {
 	.map_dma_buf = nouveau_gem_map_dma_buf,
 	.unmap_dma_buf = nouveau_gem_unmap_dma_buf,
 	.release = nouveau_gem_dmabuf_release,

drivers/gpu/drm/radeon/radeon_prime.c

@@ -85,7 +85,7 @@ static void radeon_gem_kunmap(struct dma_buf *dma_buf, unsigned long page_num, v
 
 }
 
-struct dma_buf_ops radeon_dmabuf_ops =  {
+const static struct dma_buf_ops radeon_dmabuf_ops =  {
 	.map_dma_buf = radeon_gem_map_dma_buf,
 	.unmap_dma_buf = radeon_gem_unmap_dma_buf,
 	.release = radeon_gem_dmabuf_release,