Migrate to cargo_embargo. am: 890d762137 am: 5be7270e88 am: 0885c56e5c

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/linkme-impl/+/2822777

Change-Id: Ic87c5f9f4b23849d319cbefd687491f32c4c7b37
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>