Add build files for pyserial am: 60af8d6614 am: bbb64237a7 am: 4f5f58f8d3 am: 2ff8f0ccc6

Original change: https://android-review.googlesource.com/c/platform/external/python/pyserial/+/2112264

Change-Id: Ie3c00d81732e7746827cc70f6ba0b25ce358d12a
Signed-off-by: Automerger Merge Worker <[email protected]>