Just install latest LE 7.90.x build and install touchscreen addon from repository. And then configure it as always before.
vpeter: I have intergrated RPi2 (LE Milhouse build newest verrsion) connect with Head Unit (HU) on my car via HDMI. My HU is touch screen support Mirror link, CarPlay. So can I using your Estouchy skin in this case ? Thank you.