intel/perf: fix B/C counters accumulation in non query mode

intel/perf: fix B/C counters accumulation in non query mode

When we're not using queries, all the counters from the
MI_REPORT_PERF_COUNT are available. This is the case when using
perfetto with the global pps datasource that capture global counter
values.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: 8750f43a9077 ("intel/perf: add performance query layout using MI_SRM")
Reviewed-by: Ivan Briano <ivan.briano@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18893>