1089a25588
We use `cargo ndk -p {package_name}`, where `-p` is short for
`--package`. However, `cargo ndk` has introduced the `-p` option (see
https://github.com/bbqsrc/cargo-ndk/commit/c6b93a89a2723ff0fac99b5ac86ae6636a6cf54a),
short for `--platform`. It creates a confusion and the command line
doesn't execute properly. Let's use the long option `--package` to
clarify everything.