vgabios in kvm doesn't offer 1920x1200

[David Stafford]

The change in bug 1022222 added 1920x1080, but did it by replacing 1920x1200. Both should be supported. From bug 1022222 (and my own experience with a Windows 7 instance in qemu-kvm) the resolutions that are offered in hires are:
  1920x1080
  1600x900
  1280x1024
  1280x800
  1152x864
  1024x768
  800x600
From the code there seem to be places for 8 resolutions, and one is left unused. 1920x1200 should be put back.

This is a regression, as previous releases of vgabios (in precise, for instance) did support 1920x1200, and I was using that. Dropping 1920x1200 isn't so great.

What I think should be offered through EDID is:
  1920x1200 (16:10)
  1920x1080 (16:9)
  1600x900 (16:9)
  1280x1024 (4:3)
  1280x800 (16:10)
  1152x864 (4:3)
  1024x768 (4:3)
  800x600 (4:3)

Or better:
  1920x1200 (16:10)
  1920x1080 (16:9; 1080i, 1080p)
  1600x1200 (4:3)
  1280x1024 (4:3)
  1280x800 (16:10)
  1280x720 (16:9; 720p)
  1024x768 (4:3)
  800x600 (4:3)