Merge "libbinder: Add binderRpcTestService for Trusty" am: a754657354

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2168913

Change-Id: I727c368c6404c8781f51f975f7f65709f864e60b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>