sconfig: typo fix

eliminate printf format warning.

Change-Id: I51f75a259d28c5de788f57c3d720b76ca638e330
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/1248
Tested-by: build bot (Jenkins)
Reviewed-by: Peter Stuge <peter@stuge.se>
1 file changed