Add build files for pyserial am: 4745695a5f am: b53053cfeb am: deaf17dd80

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

Change-Id: Id600861ac97bf2cfff4733ac57905d5b14e53da2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>