Change in coreboot[master]: soc/intel/common: Implement error codes for for heci_send_receive()

[Paul Menzel (Code Review)]

Attention is currently required from: Tim Wawrzynczak, Sridhar Siricilla, Subrata Banik, Kane Chen, Andrey Petrov, Patrick Rudolph.
Paul Menzel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/62299 )

Change subject: soc/intel/common: Implement error codes for for heci_send_receive()
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Patch Set 4:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/62299/comment/57c2849a_7db29e45 
PS4, Line 17: timeout  or
Only one space.

https://review.coreboot.org/c/coreboot/+/62299/comment/a08ef936_c31e9727 
PS4, Line 27: TEST=Build and boot Brya board
Could you force the error paths to see if the error codes are used correctly?