[automerger skipped] Move from libbacktrace libunwindstack. am: c2321eb2 -s ours

am skip reason: Merged-In I5c95627b3f674495e0d9d022d2efff1da5ccefc5 with SHA-1 ae29ca0c is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/19601992



Change-Id: I51462946e6569f27f9c74e37e409c4b7b7d2ab5b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>