How to package a custom IP containing IP as submodule

I look into the design.qar again, it will be better that I dont modify it as a lot of properties are tied to Arria 10. What I suggest is you download and install this device in

http://fpgasoftware.intel.com/18.1/?edition=standard&platform=linux

Choose the version that you want and click individual files. From there you can choose the specific device to be download qdz files.

After that, in Quartus, just click tools -> install device to install the arria 10 device.