kk: Mark root buffer as not dirty after updating it

Reviewed-by: Arcady Goldmints-Orlov <arcady@lunarg.com>
Signed-off-by: Aitor Camacho <aitor@lunarg.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38630>

src/kosmickrisp/vulkan/kk_cmd_buffer.c

@@ -401,6 +401,7 @@ kk_upload_descriptor_root(struct kk_cmd_buffer *cmd,
 
    memcpy(bo->cpu, root, sizeof(*root));
    root->root_buffer = bo;
+   desc->root_dirty = false;
 
    return bo->gpu;
 }