Merge "simpleperf: make help msg of --sort option more explicit." am: 453a0c335b am: f82db74827 am: 028434a558

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/1918456

Change-Id: I51367e5a81864dc4d42801f000f0be8e523ac8f3