HP Reverb G2 NVIDIA patch

INSTALL
1. sudo ubuntu-drivers install nvidia:610-open
   reboot, then: flatpak update
2. sudo ./build-nvidia-g2.sh
   (prints fixes if needed: DKMS clash, Secure Boot key)
3. reboot
   cat /proc/driver/nvidia/version shows root@<hostname> = patched

UPDATES
- Kernel: nothing to do
- Driver: sudo ./build-nvidia-g2.sh remove
          sudo apt upgrade
          (then reboot)
          flatpak update
          (rerun with new patch)

REMOVAL
- Remove: sudo ./build-nvidia-g2.sh remove
          (then reboot)
