[PATCH] GPIO for SCx200 & PC-8736x: x86-only

AFAICT, this is x86 only, so the patch below is needed to stop this new
option showing up on PPC, IA64, etc..

Signed-off-by: Dave Jones <davej@redhat.com>
Cc: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>