nvramtool: Fix CMOS checksum to match coreboot (and /dev/nvram)

Change-Id: I28b0dbad36403a31be83581107f40b3ca1332dcc
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/287
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
1 file changed