Merge "simpleperf: check if etm is enabled by the bootloader." am: 04fda5336b am: 75cb19a6e2 am: 153bfbb576

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/1364057

Change-Id: I04c1233e0bc2e95bc4e6d7ab3d3637e4d5105fb4