ec/kontron/it8516e: Add sanity checks for values from nvram

Change-Id: Ie52d80fc8657064efdcec51c31dc9309fcc28121
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/3787
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
1 file changed