Add build files for pyserial am: 4745695a5f am: b53053cfeb am: 78c857e2be am: eeb35c7dc1

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/python/pyserial/+/18802649

Change-Id: Idd4afe38f5805a5cde88a31b2c94fba6d9782157
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>