Add cargo2android.json am: 4731e61fa3 am: 93b1d2ff52 am: 8d7e01a2f5 am: c8fd47f760 am: 144a3aff1c

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/utf-8/+/2745658

Change-Id: Id269bb271626887469a0693212a1da655d03aef1
Signed-off-by: Automerger Merge Worker <[email protected]>