[PATCH] i386/x86-64: Remove checks for value == NULL in PCI config space access

Nobody should pass NULL here. Could in theory make it a BUG,
but the NULL pointer oops will do as well.

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