Fbdev issue after the drm updates 'drm-next-2023-10-31-1'

Hello,

There is a fbdev issue with the virtio-gpu-pci and virtio-vga. (The 
penguins are not displayed at boot time)

Error message:  [    0.889302] virtio-pci 0000:00:02.0: [drm] *ERROR* 
fbdev: Failed to setup generic emulation (ret=-2)

The kernel 6.6 final doesn't have this issue.

Please check the fbdev changes in the drm updates 'drm-next-2023-10-31-1'.

Thanks,
Christian