Change in coreboot[master]: soc/intel/common/block/cse: Add check before heci_reset() in heci_init()

[Matt DeVillier (Code Review)]

Attention is currently required from: Subrata Banik, Tim Wawrzynczak, Paul Menzel, Angel Pons, Sridhar Siricilla, Patrick Rudolph.
Matt DeVillier has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/61304 )

Change subject: soc/intel/common/block/cse: Add check before heci_reset() in heci_init()
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Patch Set 3:

(1 comment)

File src/soc/intel/common/block/cse/cse.c:

https://review.coreboot.org/c/coreboot/+/61304/comment/80ed45c0_fde7b029 
PS3, Line 92: {
> Are you suggesting something like EARLY_HECI_INIT config to restrict the heci_init() call for older platform. If I'm not wrong, it's on SKL when heci_init() is getting called from bootblock which can be moved to romstage.

actually you're right, if SKL/KBL don't need to call heci_init() in bootblock, it should be moved to romstage to be consistent with the rest of the platforms.

that, along with the checks you proposed above, should mitigate the long timeout when heci_reset() is called on devices which do not have an active/enabled ME