Android U Beta 1 GPL
Make bindgen available to product and vendor am: 52d57a2226

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/bindgen/+/2475526

Change-Id: I7087e5675f4fdc9dd92073548ddb620863f6f122
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>