Merge "libbinder: add build option for single-threaded RPC" am: 8021d313 am: 2d6e35a2

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2057171



Change-Id: I23b8cf60d4d8e4ed9094b0363f3280ecf9a2928f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>