#143: unify intel car for model_6[ef]x

[coreboot]

#143: unify intel car for model_6[ef]x
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   Reporter:  oxygene            |          Owner:  oxygene
       Type:  enhancement        |         Status:  new    
   Priority:  minor              |      Milestone:         
  Component:  coreboot           |        Version:  v2     
   Keywords:                     |   Dependencies:         
Patchstatus:  there is no patch  |  
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 they're mostly the same (see diff), and it eases maintenance and might
 lead to support for both CPU types on the same board with run-time
 selection.