Request: Add support for Nvidia Jetson Products

[theofficialgman]

Nvidia does not supply .run files for these systems, instead preferring to ship custom rootfs of ubuntu with .debs containing the gpu drivers, firmware, and other software.

they also provide a binary tarfile with the drivers only contained in the proper repo structure.

the debs and drivers are found here (example release 32.3.1):
https://developer.nvidia.com/embedded/dlc/r32-3-1_Release_v1.0/t210ref_release_aarch64/Tegra210_Linux_R32.3.1_aarch64.tbz2

nested inside this file is another archive nv_tegra/nvidia_drivers.tbz2, this is the tarfile which contains the structure with the userspace drivers.

any assistance in packing this tarfile into a flatpak runtime would probably be most of the work to getting this functional for a proof of concept

[theofficialgman]

I have make BSP flatpak's for 32.3.1, 32.7.3, and 35.1.0 for anyone that comes across this that is interested.
due to bugs in flatpak not applying finish-args for runtime, you will have to apply overrides for the system so the GPU can be accessed

https://github.com/cobalt2727/L4T-Megascript/tree/master/assets/Flatpak

# set flatpak overrides so sandbox can access the GPU
sudo flatpak override --device=all
sudo flatpak override --share=network
sudo flatpak override --filesystem=/sys

# set override in profile so tegra GPU drivers are always used
echo "export FLATPAK_GL_DRIVERS=nvidia-tegra-32-7-3" | sudo tee /etc/profile.d/flatpak_tegra.sh
sudo sh -c "cat > /etc/sudoers.d/flatpak_tegra << _EOF_
Defaults      env_keep += FLATPAK_GL_DRIVERS
_EOF_"

# install the tegra-x1 GPU BSP flatpak
sudo flatpak install --system ./org.freedesktop.Platform.GL.nvidia-tegra-32-7-3.flatpak