perf test: Add git ignore for perf data generated by the ARM CoreSight tests

Ignore perf output data files generated by perf tests for cleaner git
status.

Reviewed-by: James Clark <[email protected]>
Signed-off-by: Carsten Haitzler <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: Mathieu Poirier <[email protected]>
Cc: Mike Leach <[email protected]>
Cc: Suzuki Poulouse <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

Author: carstenhaitzler

tools/perf/.gitignore

@@ -15,8 +15,8 @@ perf*.1
 perf*.xml
 perf*.html
 common-cmds.h
-perf.data
-perf.data.old
+perf*.data
+perf*.data.old
 output.svg
 perf-archive
 perf-iostat