The last of the console code inside the frmaebuffer layer. I also moved all the graphics related code into the drivers/video directory.

Add an AGP driver for the AGP aperture in the northbridge of the AMD Hammer.
The AGP driver works for both 32bit and 64bit kernels.

It also adds some hooks to the AGP driver to allow the x86-64 GART based
IOMMU code to share the aperture with AGP. The hooks are intentionally kept
minimalistic. In addition it needs some Config.in hackery, because AGP cannot
be modular in this case, because the IOMMU needs to control its startup and
it runs early when PCI is initialized.

The original AGP driver was done by Dave Jones, I added the IOMMU support.

agpgart: added "-agp" to the .c files that are for specific hardware types, based on mailing list comments.

The majority of this work was done by Dave Jones, I merely converted the
driver to the "new" pci api.

Use the new

	obj-$(CONFIG_FOO) += foo/

syntax to descend into a subdir and link in the result, if
CONFIG_FOO=y.

  - Kai Germaschewski: Makefile dependency fixes. ISDN update
  - Chris Mason: another reiserfs tail writing fix
  - unify pte/pmd allocation
  - undo some VIA PCI fixups - conflicting behaviour