venus: refactor for property query of dma_buf fd

With a TODO to route host storage size instead of that from the guest.

Signed-off-by: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11055>
3 files changed