Qnx: Skip debug token for internal unsecure devices

Do not require debug token for devices
with internal unsecure development image.

Change-Id: I9c222492c63a7c92c253424ccb3f7c823223c95b
Reviewed-by: Thomas Zander <zander@kde.org>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>