anv: add an option to disable secondary command buffer calls

anv: add an option to disable secondary command buffer calls

Those are currently hurting Felix' ability to look at the batches.

We can probably detect this in the aubinator but that's a bit more
work than falling back to the previous behavior.

v2: Condition VK_KHR_performance_query to not using this variable (Jason)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5391>