Use `llvm-readobj` to filter out irrelevant objects am: 0ee3841e91 am: f491011b34

Original change: https://android-review.googlesource.com/c/platform/tools/asuite/+/3296527

Change-Id: Iee7d0c201d67574af659efeba1ef18264b626e2b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>