Add library for core memory routines. am: 4d56ab71 am: 6c969b72

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



Change-Id: I69e4ac7d42caef55ea972e6a9406928b3052f413
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>