lavapipe: enable pipeline stats queries

These pass CTS, but I think are missing some stuff CTS doesn't test.

This is one of the base Vulkan 1.0 features and I'd like to support
it for conformance.

Cc: "20.3" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7705>
(cherry picked from commit 87c70f1984fc6f9be6c32559ecfbde1946ff7360)
4 files changed