Merge "libbinder: avoid global mutex every binder call" am: 2054ee3fee am: 0ee6d8fcd8 am: 4d836a68c6

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1367817

Change-Id: Ifeeed2e4c02f5453007ad7f7f7718dff1aa84ce2