postmarketOS Device Trees for on7xelte

How to use:

git clone https://github.com/LinuxForExy7870/pmos-samsung-on7xelte.git
cd pmos-samsung-on7xelte

2. Do pmbootstrap init and Control + C quit after git clone had completed.
3. cp -rv device-samsung-on7xelte firmware-samsung-on7xelte linux-samsung-on7xelte ~/.local/var/pmbootstrap/cache_git/pmaports/device/testing/
4. pmbootstrap init with:

Channel: edge
Vendor: samsung
Codename: on7xelte
User interface: xfce4
Extra packages: msm-fb-refresher # untested, but recommended.

5. pmbootstrap install --android-recovery-zip
6. pmbootstrap export
7. cp /tmp/postmarketOS-export/* .
8. Follow instructions given here to flash it: https://forum.xda-developers.com/t/dev-linux-alpha-build-released-postmarketos-for-g610f.4392165/

Contributions are welcome. Please make the pull in the next branch. Please test it before making a pull as we have only 2 people handling the whole testing situation and have our own stuff to do. :)