Revert PCIBIOS_MIN_IO changes for 2.6.13

This reverts commits

  71db63ac
	[PATCH] increase PCIBIOS_MIN_IO on x86

and

  0b2bfb4e


    ACPI: increase PCIBIOS_MIN_IO on x86

since Lukas Sandströ<lukass@etek.chalmers.se> reports that this breaks
his on-board nvidia audio.

We should re-visit this later. For now we revert the change

Signed-off-by: Linus Torvalds <torvalds@osdl.org>