fix "error: ... is not public in TokenInfo; cannot be accessed…

[scpcom]

… from outside package"

Currently the only information you get with getTokenInfo is the list size (token count).
If someone imports PrivacyIDEA and tries to get more info the build fails:

import java.util.List;
import org.privacyidea.PrivacyIDEA;
import org.privacyidea.TokenInfo;

// ...

List<TokenInfo> tokenInfoList = privacyIDEA.getTokenInfo(username);
TokenInfo tokenInfo = tokenInfoList.get(0);
String type = tokenInfo.tokenType;