[coreboot-gerrit] Change in coreboot[master]: soc/intel/common: Retry END_OF_POST command

[Paul Menzel (Code Review)]

Attention is currently required from: Anil Kumar K, Subrata Banik, Tim Wawrzynczak, Sridhar Siricilla, Patrick Rudolph.
Paul Menzel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/62192 )

Change subject: soc/intel/common: Retry END_OF_POST command
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Patch Set 6:

(3 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/62192/comment/c6a85c59_eb35cb12 
PS6, Line 11: max 3 times before triggering the error handling flow.
What is the problem, and why is the retry needed? Why three and not less or more?

Patchset:

PS6: 
Are new debug messages printed?

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

https://review.coreboot.org/c/coreboot/+/62192/comment/f302d1da_500e8d08 
PS6, Line 55: 	case CSE_TX_ERR_CSE_NOT_READY:
Does this need fallthrough statements? Does clang build the image without problems?