Change in coreboot[master]: nb/intel/i945: Add a common function to compute TSEG size

[build bot (Jenkins) (Code Review)]

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/23448 )

Change subject: nb/intel/i945: Add a common function to compute TSEG size
......................................................................

Patch Set 8: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/69363/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/23688/ : SUCCESS