Change in coreboot[master]: nb/intel/sandybridge/peg: Add PEG code

[build bot (Jenkins) (Code Review)]

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/20472 )

Change subject: nb/intel/sandybridge/peg: Add PEG code
......................................................................

Patch Set 1: Verified-1

Build Unstable

https://qa.coreboot.org/job/coreboot-gerrit/56586/ : UNSTABLE

https://qa.coreboot.org/job/coreboot-checkpatch/12160/ : SUCCESS