Merge "Fix `adb root` invocations in script `acov-llvm.py`." am: 97988980d0 am: a0c4af18c3 am: f6fc60c2be

Original change: https://android-review.googlesource.com/c/platform/development/+/1706846

Change-Id: I3cc40f2ae2fb5ef158361036b2a11a6dfc99248c