introduce mapRetrieveLocklessRW() am: 0fff839ae6

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3134554

Change-Id: I865908cecfaa37dca1959e9174065fcda756b964
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>