device/ddr3: Prevent overflow when adding SMBUS Table 17 entries

Change-Id: If84c6849011106b2a50e504b79cda9cd6a3a9cc3
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/28588
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
1 file changed