Merge "libbinder: allow externally created connections" am: 91c6a9f5d8 am: ecf935cdba am: aa87e1d092 am: 917f2ec68c

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1785497

Change-Id: Ie33b1d95a9da138ddc027eeb916e89117469b3e9