Migrate to cargo_embargo. am: ce94bae5eb am: 41fc785321

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/clang-sys/+/2833291

Change-Id: Ice012c4041157dc843b5aaf9c73c4e1a16e1bee1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>