Import crc32fast-1.2.1 am: 9f04d26dc4 am: 43aced41b9 am: 467ec3265a am: f77f0ec2bc

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/crc32fast/+/1587991

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Icf29c8fefa21552cebd5a3c9263ae93a27cde592