Migrate to cargo_embargo. am: 6dbb08787b am: 7c30f29a2e

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/userfaultfd-sys/+/2835512

Change-Id: If3a6cba0dc5d1e88a89cc424ca22e3c072aa0471
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>