Merge "simpleperf: record: Add --etm-flush-interval" into main am: e04e4a20c8

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/3079789

Change-Id: Iee2d997c185ee2b8c178cd56dde7879fccd00cdd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>