Merge "libbinder: allow multiple outgoing threads for single-threaded" am: 1c63a158aa

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2167825

Change-Id: If55dc9b2dfc9661d409577c29c4895a25494d63f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>