Merge "Refresh Android.bp, cargo2android.json, TEST_MAPPING." am: 46d5ad1c7e am: 53809fe6e7

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/libloading/+/1912525

Change-Id: I823e6437dd449319374b784346a482e254be2504