MAINTAINERS: add qemu_vga.ndrv file entry for Mac machines

The VGA driver built from Ben's QemuMacDrivers repository is used exclusively
by the Mac machines.
Signed-off-by: NMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>

MAINTAINERS

@@ -990,6 +990,7 @@ F: include/hw/misc/mos6522.h
 F: include/hw/ppc/mac_dbdma.h
 F: include/hw/pci-host/uninorth.h
 F: include/hw/input/adb*
+F: pc-bios/qemu_vga.ndrv
 
 Old World (g3beige)
 M: David Gibson <david@gibson.dropbear.id.au>
@@ -1002,6 +1003,7 @@ F: hw/intc/heathrow_pic.c
 F: hw/input/adb*
 F: include/hw/intc/heathrow_pic.h
 F: include/hw/input/adb*
+F: pc-bios/qemu_vga.ndrv
 
 PReP
 M: Hervé Poussineau <hpoussin@reactos.org>