Merge "Refresh Android.bp, cargo2android.json, TEST_MAPPING." am: 0d5e3d854b am: b88ec5acf3

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/itoa/+/1912499

Change-Id: I33daf013fa03d64620d22df78598d6de373d41b0