QemuMacDrivers: update qemu_vga.ndrv to 90c488d built from submodule
This update to qemu_vga.ndrv includes the following changes:
- Build guest resolution list from QEMU EDID data if enabled
- Fixes to re-enable 256 color mode
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Mark Cave-Ayland