[PATCH] ipmi: use CONFIG_DMI instead of CONFIG_X86

[PATCH] ipmi: use CONFIG_DMI instead of CONFIG_X86

With Andi Kleen's x86_64 patch to use DMI, and my ia64 to use DMI, there is
now a new CONFIG_DMI option which takes the place of CONFIG_X86 to denote
the availability of the DMI functions.  Make the IPMI driver use CONFIG_DMI
instead.

Tested on ia64 2.6.15 kernel plus the previous patch, on a Dell PowerEdge
7250 Itanium2 server, and it now autodetects the IPMI KCS driver as
expected.

Signed-off-by: Matt Domsch <[email protected]>
Acked-by: Corey Minyard <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>