QNAP-TR004 Port Multiplier does not provide SMART data

[Anton]

The QNAP TR-004 does use the JMB39X chipset but smartctl -a -d jmb39x,[0-3] does not return a valid JMB39X response. This is due to the fact that the request sector commands as well as the identify command differ from the jmb39x implementation. I have reverse engineered the QNAP TR-004 response and created a PR on GitHub[1].
This adds currently a new device (qnaptr) with the same usage pattern as jmb39x.
Feel free to change the code of the PR as needed(e.g. adding it as another option to jmb39x).

[1] ​https://github.com/smartmontools/smartmontools/pull/47