[coreboot-gerrit] Change in coreboot[master]: soc/intel/common/cse: Add config to disable CSE at pre-boot

[Angel Pons (Code Review)]

Attention is currently required from: Felix Singer, Nico Huber, Subrata Banik, Tim Wawrzynczak, Patrick Rudolph, EricR Lai.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/60721 )

Change subject: soc/intel/common/cse: Add config to disable CSE at pre-boot
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Patch Set 2:

(1 comment)

File src/soc/intel/common/block/cse/Kconfig:

https://review.coreboot.org/c/coreboot/+/60721/comment/cb79686a_8f83fa2d 
PS2, Line 10: 	depends on SOC_INTEL_COMMON_BLOCK_CSE
Just noticed that this setting also shows up for APL, which unconditionally disables HECI: soc/intel/apollolake/cse.c function `heci_cse_lockdown()` unconditionally calls the `disable_heci1()` function. We could guard the `disable_heci1()` call with this Kconfig option, and override its default value in `soc/intel/apollolake/Kconfig` as follows:

config DISABLE_CSE_AT_PRE_BOOT
    default y

This should be done in a separate commit.