[PATCH] x86_64: update defconfig - reenable fusion

I mistakedly disabled fusion support in an earlier update. Fusion
is commonly used on many x86-64 systems, so this was a problem.
This patch fixes that.

Signed-off-by: And Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>