anv: implement VK_INTEL_performance_query

anv: implement VK_INTEL_performance_query

v2: Introduce the appropriate pipe controls
    Properly deal with changes in metric sets (using execbuf parameter)
    Record marker at query end

v3: Fill out PerfCntr1&2

v4: Introduce vkUninitializePerformanceApiINTEL

v5: Use new execbuf extension mechanism

v6: Fix comments in genX_query.c (Rafael)
    Use PIPE_CONTROL workarounds (Rafael)
    Refactor on the last kernel series update (Lionel)

v7: Only I915_PERF_IOCTL_CONFIG when perf stream is already opened (Lionel)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Rafael Antognolli <rafael.antognolli@intel.com>