Reapply "Add local impl of mapper for libhidlmemory" am: 96424c6d69

Original change: https://android-review.googlesource.com/c/platform/system/libhidl/+/2828377

Change-Id: Ib11c48afd20badc261ef0cadc0d94be3962b2d31
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>