Merge "rust: Visibility exports for bindgen" am: 6d1845eeba

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2170045

Change-Id: I740889c4ff871fc78207f68b4118950a800404e8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>