[L] Change in coreboot[main]: soc/intel/common/systemagent_server: Add server platform system agent

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Attention is currently required from: Angel Pons, Arthur Heymans, Felix Held, Felix Singer, Jérémy Compostella, Lean Sheng Tan, Paul Menzel, Shuo Liu.

[e-mail] has posted comments on this change by [e-mail]. ( https://review.coreboot.org/c/coreboot/+/83318?usp=email )

Change subject: soc/intel/common/systemagent_server: Add server platform system agent
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Patch Set 29:

(3 comments)

File src/soc/intel/common/block/systemagent-server/Kconfig:

https://review.coreboot.org/c/coreboot/+/83318/comment/99979e66_3a4b6a67?usp... :
PS26, Line 15: 	  treated as 1s.
> to clean up?

Done

https://review.coreboot.org/c/coreboot/+/83318/comment/15b71f23_b93595f1?usp... :
PS26, Line 26: 	default 0x100000
> to clean up?

Done

File src/soc/intel/common/block/systemagent-server/common.c:

https://review.coreboot.org/c/coreboot/+/83318/comment/5fa90248_59b603b9?usp... :
PS29, Line 8: pci_moving_config32
> I thought this existed in common code, any reason not to use it?

The common code is aimed to be used in ramstage, i.e., the first parameter is `struct device *`, but I need this function in romstage to probe the alignment of TSEG base.