Merge "Add BUILD.bazel files for Rust kernel build" am: eff99b7965

Original change: https://android-review.googlesource.com/c/platform/prebuilts/rust/+/2456109

Change-Id: I50e98edf18472b8f5bca59fc86f8ab5f7f5d0cc9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>