Merge "Moving FlashallTool Definition" am: 39b1de953f

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2515685

Change-Id: I5cc9fe3dcaedf76f4e87300d5b8ec15d168c6f66
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>