intel/perf: report query split for mdapi

Also forgotten in the initial implementation.

v2: Report begin timestamp scaled by the timestamp frequency (Windows
    behavior)

v3: Rename split to disjoint to match GL terminology (Tapani)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: <mesa-stable@lists.freedesktop.org>
Acked-by: Tapani Pälli <tapani.palli@intel.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3112>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3112>

src/intel/perf/gen_perf.c

@@ -2372,6 +2372,12 @@ accumulate_oa_reports(struct gen_perf_context *perf_ctx,
                gen_perf_query_result_accumulate(&query->oa.result,
                                                 query->queryinfo,
                                                 last, report);
+            } else {
+               /* We're not adding the delta because we've identified it's not
+                * for the context we filter for. We can consider that the
+                * query was split.
+                */
+               query->oa.result.query_disjoint = true;
             }
 
             last = report;