Hi,
there is no generic library. But the library itself is structured to make porting quite easy. If you look into the docs folder of the reader library you will find detailed information about the reader libraries structure and APIs. I recommend to check the layer model and try to understand how this transfers to the actual source code.
The reader library is a layer structure with generic interfaces. What you have todo is to port the DAL and BAL (part of phDriver) and thats it. The layers above, like HAL, PAL, AL etc.. you do not have to touch and will give you all the advantage of the library on any MCU you want.
This is a quite good example how to port the library: Porting to i.MX
It might not be your target MCU put it will give you a very good idea how to do it for the MCU of your choice. If you google 'nxp nfc reader library porting' you will find a couple of results and example more.
Best regards,
Alexander