Migrate to cargo_embargo. am: a45f1d19a0 am: fc235e3b42

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/macaddr/+/2796279

Change-Id: I41508a7532d9aa02d0aa70b444626dd00a855508
Signed-off-by: Automerger Merge Worker <[email protected]>