824x and 107 bridges from Freescale/Tundra have an erratum where
speculative PCI reads may return stale data.  One of the two documented
workarounds is to turn of speculative PCI reads.  This patch does that.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>