I have yet to see a serial nokia lcd that can have data-output - you can confirm that by reading the controller's datasheet.
If yours is indeed one of those beasts that output data, you can deal with that in a software spi.
If you have to use hardware spi, put a resistor inbetween your mosi and the lcd's data pin, and then connect the spi's miso to the lcd's data pin directly - that's how you deal with a sdio pin (serial input / output pin).
But before you waste all that energy, read the datasheet.