Merge "rust: Use rust_ffi for Rust generated C libraries." am: 5b757feed9 am: f2f8c8599f am: ea5f2ddf59

Original change: https://android-review.googlesource.com/c/platform/development/+/1530159

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I5678440f48fe9f87c2faf7220f2f8c63ad1a157e