perf test: Add git ignore for tmp and output files of ARM CoreSight tests

Ignore other output files of the new CoreSight tests so they don't
fill git status with noise we don't need or want.

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

tools/perf/.gitignore

···
 perf-iostat
 tags
 TAGS
+stats-*.csv
 cscope*
 config.mak
 config.mak.autogen
···
 *-flex.*
 *.pyc
 *.pyo
+*.stdout
 .config-detected
 util/intel-pt-decoder/inat-tables.c
 arch/*/include/generated/