I'm afraid that TFT display and RA8875 driver are not currently supported by the Galileo Board since the libraries are not written to support the Galileo architecture.
I know there is another TFT screen from Adafruit that needs some modifications in its libraries to be supported with the Galileo Board. I'll recommend you to check this thread, it could be interest for you: Re: 2.8" TFT V2 and Galileo Problem
The RA8875 (4.3" TFT LCD + capacitive touch feature) from East Rising works fine with the Intel Edison. You will however need to modify the existing library to get it to work.
I am pretty sure the one from Adafruit will also work.