[automerger skipped] Update mtp packet buffer am: 55757c29 -s ours

am skip reason: Merged-In I98398a9e15962e6d5f08445ee7b17f5d61a3a528 with SHA-1 a5b76f86 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/25444044



Change-Id: Ia7285b77877c2817607760ce770f243a2a3ed1d2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>