venus: support VK_KHR_deferred_host_operations

Details are at:
https://gitlab.freedesktop.org/virgl/venus-protocol/-/merge_requests/97

For venus and vkr, we'll use pure driver side impl. Start with (1) and
move towards (2) later as things evolve. We'd like renderer side to be
simple and passive.

Signed-off-by: Yiwei Zhang <zzyiwei@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33907>
2 files changed