[M] Change in coreboot[master]: util/sconfig: Include optional maiboard chip header

[Karthik Ramasubramanian (Code Review)]

Attention is currently required from: Raul Rangel, Martin L Roth, Jon Murphy, Arthur Heymans, Angel Pons, Tim Van Patten, Felix Held.

Karthik Ramasubramanian has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/74736 )

Change subject: util/sconfig: Include optional maiboard chip header
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Patch Set 3:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/74736/comment/addede07_11280c79 
PS1, Line 9: Include
> I thought about adding an option to update the name of the mainboard chip. […]

Implemented Raul's suggestion.

Commit Message:

https://review.coreboot.org/c/coreboot/+/74736/comment/3df8c5c6_246a793e 
PS2, Line 8:
> 'defintions' may be misspelled - perhaps 'definitions'?

Please fix.