is no good (or reliable) way to retrieve the physical address of "stolen"
(by the BIOS) graphics memory.
* Implemented allocation of additional graphics memory in case the BIOS was
a bit too cheap. We now guarantee 8 MB of memory available to the graphics
chip - would be nicer to only allocate that on demand, though.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17433 a95241bf-73f2-0310-859d-f6bbb57e9c96