New drivers merged after changes were done in prime TTM code.
Fix build.
Signed-off-by: Dave Airlie <airlied@redhat.com>
        ret = ttm_bo_init(&ast->ttm.bdev, &astbo->bo, size,
                          ttm_bo_type_device, &astbo->placement,
                          align >> PAGE_SHIFT, 0, false, NULL, acc_size,
-                         ast_bo_ttm_destroy);
+                         NULL, ast_bo_ttm_destroy);
        if (ret)
                return ret;
 
 
        ret = ttm_bo_init(&cirrus->ttm.bdev, &cirrusbo->bo, size,
                          ttm_bo_type_device, &cirrusbo->placement,
                          align >> PAGE_SHIFT, 0, false, NULL, acc_size,
-                         cirrus_bo_ttm_destroy);
+                         NULL, cirrus_bo_ttm_destroy);
        if (ret)
                return ret;
 
 
        ret = ttm_bo_init(&mdev->ttm.bdev, &mgabo->bo, size,
                          ttm_bo_type_device, &mgabo->placement,
                          align >> PAGE_SHIFT, 0, false, NULL, acc_size,
-                         mgag200_bo_ttm_destroy);
+                         NULL, mgag200_bo_ttm_destroy);
        if (ret)
                return ret;