Oh, I forgot the rationale:
1. I think we are heading towards a reality where some kind of working
GL is a 'must' for any kind of UI work.
2. Typically people build images and then transfer them to the NUC or
even target boards for testing - using qemu would be less awkward.
3. Current qemu config
0. TLDR:
$ . oe-init-build-env build-virgl
$ bitbake core-image-sato-sdk
$ runqemu kvm gl
$$ run glxgears or any other GL-capable binary inside qemu
1. qemu is switched over to use gtk frontend. I simply couldn't get SDL
frontend to work properly, it only displays a blank black window or doesn't
