Merge changes Ib892aeea,I1b5f2b85,I449517fb,I6583aebc into main

* changes:
  simpleperf: Delay processing ETM data until the buffer is half full
  simpleperf: Rotate the last cpu disabling ETM events
  simpleperf: Flush ETM data at the end of recording
  simpleperf: Enable ETM events after create aux buffer