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

Add llvm-objcopy to android_sdk_repo_host's implicit tools am: df34caf8 am: 37f8b661 am: ef7db81c

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



Change-Id: I79003418f85394bed85381a6ec2c5e2b62e95716
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>