Change in coreboot[master]: nb/intel/i945: Use postcar stage to tear down CAR

[build bot (Jenkins) (Code Review)]

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/23471 )

Change subject: nb/intel/i945: Use postcar stage to tear down CAR
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Patch Set 2:

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/21299/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/66691/ : SUCCESS