Hardware-wise this looks fairly trivial but will require a PCB interconnect to generate the 3.3V and 1.8V needed by your panel and also to generate the 2.8V for the touch panel. You will also need an LED backlight driver. The MIPI DSI interface on the T4 only provides 5V.
You then need to modify the u-boot to add your LCD display timing and interface selection. After this, you need to also add this timing to the Linux kernel and then include them in your deployment.
I have not checked your panels timing but it might be close to the same 800x1280 used by FA for the HD702E eDP panel.
I have only just downloaded the Android source for the T4 and about to look at porting my LVDS IPS 7" LCD to that. I already have it working with Android 5.1 on the Nano PC T3 Plus.