virgl: expose a few more extensions if the host supports them and update features
With that we get OpenGL 4.6 if the host supports it and the VM supports blob resources.
Host side changes: virgl/virglrenderer!1120 (merged)
With that we get OpenGL 4.6 if the host supports it and the VM supports blob resources.
Host side changes: virgl/virglrenderer!1120 (merged)