[XS] Change in coreboot[main]: intel/alderlake: Remove FSP_PUBLISH_MBP_HOB config for RPL

[Subrata Banik (Code Review)]

Attention is currently required from: Dinesh Gehlot, Kapil Porwal, Kilari Raasi, Nick Vaccaro, Paul Menzel, Ronak Kanabar.

Subrata Banik has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81446?usp=email )

Change subject: intel/alderlake: Remove FSP_PUBLISH_MBP_HOB config for RPL
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Patch Set 5: Code-Review+2

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/81446/comment/cb030f80_a69af622 :
PS5, Line 9: Currently, the RPL FSP retrieves the chipset initialization
           : version via HECI commands due to the MBP HOB creation being
           : disabled (SkipMbpHob=1).This method has resulted in an
           : approximate 150ms increase in boot time.Investigations are
           : ongoing to determine the cause of the delay when using HECI
           : commands.As an interim solution, this patch sets SkipMbpHob=0,
           : enabling the use of MBP HOB or acquiring the chipset
           : initialization version, which is expected to reduce the boot
           : time.
The RPL FSP currently uses HECI commands to retrieve the chipset initialization version because the MBP HOB creation is disabled (SkipMbpHob=1). This has resulted in an approximate 150ms increase in boot time. Investigations are ongoing to determine the cause of the delay when using HECI commands. As an interim solution, this patch sets SkipMbpHob=0, enabling the use of MBP HOB or acquiring the chipset initialization version, which is expected to reduce the boot time.