Add a binary to generate .map files from filesystem image am: 83b594bb04

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/2605629

Change-Id: I8691d9e6feddf3b5852d403bd786f43aa70ae659
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>