Fix latency calculation am: 0871db4b68

Original change: https://googleplex-android-review.googlesource.com/c/device/generic/goldfish/+/19369091

Change-Id: I459293ac20497951f67b47199981975c7bf275d6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>