hw/sparc64: Create VGA device only if it has really been requested

The sun4u/sun4v machine currently always creates a VGA device, even if
the user started QEMU with "-nodefaults" or "-vga none". That's likely
not what the users expect in this case, so add a check whether the VGA
adapter has really been requested.

Signed-off-by: Thomas Huth <huth@tuxfamily.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
1 file changed