servengines/pilot superio: add attribute unused

Not all users use both functions, so add __attribute__((unused))
to prevent compiler errors.

Change-Id: I8485bb9150b04d1f9fdc231152a43bcd6fc713a7
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1193
Tested-by: build bot (Jenkins)
1 file changed