vkernel - Fix systat -vm 1

* Make the 'dirtybufspace' symbol global in the kernel so systat -vm 1
  run from userland under a vkernel can find it.  For some reason, vkernel
  builds lose static symbols that real-kernel builds don't have a problem
  with.

Reminded-by: tuxillo
drm/i915: Add i915_gem_object_sync()
drm/i915: Add some missing locks

Obtained-from: Linux 3.8.13
kernel/vga: Remove VGA_NO_BIOS and VGA_ALT_SEQACCESS options.

VGA_NO_BIOS and VGA_NO_MODE_CHANGE were overlapping 90% or more in
functionality, so remove the former (which is internal anyway) and
use VGA_NO_MODE_CHANGE there too.

Also remove VGA_ALT_SEQACCESS which provided some alternate way to
access the VGA sequencer. I've not heard of anyone needing this
option ever, so assume that it is no longer needed. It can be brought
back if it turns out to be important to anyone.

In-discussion-with: ivadasz