Provide additional AES-XTS test patterns to enhance test coverage.

Provide additional AES-XTS test patterns to enhance test coverage.

To enhance test coverage for AES-XTS mode, we provided longer additional
testing patterns from BoringSSL for AES-XTS testing.

Signed-off-by: Jerry Shih <jerry.shih@sifive.com>
Signed-off-by: Phoebe Chen <phoebe.chen@sifive.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21923)