Merge "Refresh Android.bp, cargo2android.json, TEST_MAPPING." am: 3c69316d95 am: 7edfadee98

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/fnv/+/1912520

Change-Id: I0231e1aeb89461b7c917769a194917b7da0c19a2