Add library for core memory routines. am: 4d56ab71

Original change: https://android-review.googlesource.com/c/platform/external/arm-optimized-routines/+/2153622



Change-Id: I5ff52167cce5d4fe77e559f4d19015ffaa4898f9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>