- Correct the ranges of the bus resource windows on sparc64.
This makes PCI video cards work that hang off directly from
the Host-to-PCI bridge in machines like the Blade 100. 
- Default to old 'keyboard' driver for sparc64. Patches for 'kbd'
one were not enough so until new driver is fixed, this change
makes Xorg work with sparc64 keyboards. Knob WITH_SPARC_KBD is
provided to ease efforts of fixing 'kbd'.
Submitted by: marius