Migrate to cargo_embargo. am: 8f17a51220

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/vhost-device-vsock/+/2824790

Change-Id: Ieb1ce379a69ba03799c414abd87a27a5800cc626
Signed-off-by: Automerger Merge Worker <[email protected]>