Merge "simpleperf: update doc for supporting ETM in the kernel." am: 43ccc71e3d am: ab47ce778e am: a4e62a8cdf am: e7d079131c

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/2050287

Change-Id: Ib46a8c97d7a3b01cd7450435152ada4f547ee274
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>