[L] Change in coreboot[master]: mb/intel: add Archer City CRB support

[Lean Sheng Tan (Code Review)]

Attention is currently required from: Patrick Rudolph, Simon Chou, Johnny Lin, Paul Menzel, Shuming Chu (Shuming), Arthur Heymans, Juan Sanchez.

Lean Sheng Tan has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/71968 )

Change subject: mb/intel: add Archer City CRB support
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Patch Set 28:

(1 comment)

File src/mainboard/intel/archercity_crb/romstage.c:

https://review.coreboot.org/c/coreboot/+/71968/comment/9814c9d4_31690a84 
PS27, Line 96: 			"SerialIoUartDebugEnable to %d\n", FSP_LOG, FSP_LOG_DEFAULT);
> Exceeding the limit is allowed for print strings. The reasoning is, that it’s easier to grep.

hi Paul do you have any example as reference? or where is this documented in guideline? thanks.