[PATCH] new radeon memory map fixes

[Benjamin Herrenschmidt]

> Xorg driver patch:
> http://gate.crashing.org/~benh/radeon-memmap-7.0-2.diff
> 
> DRM patch:
> http://gate.crashing.org/~benh/radeon-memmap-drm-1.diff

Ok, DRM patch is busted, it breaks an assumption done by the DRM that
AGP is always appended to the framebuffer in card space which is no
longer the case. I'll need to do a bit more fixing there. New patch soon
hopefully.

Ben.