Merge "binder: remove mutex from transaction processing loop" into main am: f9335c655d

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

Change-Id: Ib00bd14fdaa3c7ef8ef979e097a4f7aabdcd37d6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>