Merge "binder: remove mutex from transaction processing loop" into main am:...

Merge "binder: remove mutex from transaction processing loop" into main am: f9335c65 am: da56821c

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/3107366



Change-Id: I49d1a21f2ed1362c2dff8d92398cabc99424ea15
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>