@Sjll tried several different things as well as rebuilding the kernel from stock firmware sources. Nothing really helped though. He even tried rebuilding several Vendor images to try to add the drivers the same way that stock touch was accomplished on his custom kernel for the XZ2p but it didn't work. I think he has given up until he can obtain a XZ2P himself one day.
If loading the kernel modules via rc scripts doesn't work hopefully someone finds/writes a touch driver for the kernel.