Add llvm-objcopy to android_sdk_repo_host's implicit tools am: df34caf8 am: 37f8b661

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2860767



Change-Id: I587fa7d9889d5367f6c4c3a16a00e8bb4b8bea44
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>