Merge "librust_baremetal: Add memcpy_chk" am: 716ed9b931 am: e4eafe8db5 am: 5a7c7ad3c6

Original change: https://android-review.googlesource.com/c/platform/bionic/+/2337445

Change-Id: I1f2e8a029e120e4cb107c4c1028c09ca41c3a90b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>