Merge "librust_baremetal: Add memcpy_chk" am: 716ed9b931

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

Change-Id: Ib1b59d81e0fadb0959250b499918de13c1b44821
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>