jernetst waveshare update

#! /bin/bash
git clone https://github.com/swkim01/waveshare-dtoverlays.git
cd waveshare-dtoverlays
git pull
sudo mv /boot/overlays/waveshare35a.dtb waveshare35a_orig.dtb
sudo cp waveshare35a-overlay.dtb /boot/overlays/waveshare35a.dtbo
sudo cp waveshare35a-overlay.dtb /boot/overlays/waveshare35a.dtb