Change in coreboot[master]: lib: Treat dimm addr_map 0 as non-existent

[Eric Lai (Code Review)]

Attention is currently required from: Jakub Czapiga, Tim Wawrzynczak, Ivy Jian, Lean Sheng Tan.
Eric Lai has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/63628 )

Change subject: lib: Treat dimm addr_map 0 as non-existent
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Patch Set 6:

(4 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/63628/comment/bfbf2177_3e9aa862 
PS3, Line 7: not exist
> nit: Maybe "invalid" is better word? Or "non-existent".

Done

https://review.coreboot.org/c/coreboot/+/63628/comment/d52b6959_209773d3 
PS3, Line 9: not exist
> Same as above.

Done

https://review.coreboot.org/c/coreboot/+/63628/comment/91788857_eb8f9bff 
PS3, Line 10: there no HW exist
> no HW exists […]

Done

File src/lib/spd_cache.c:

https://review.coreboot.org/c/coreboot/+/63628/comment/629ac53b_a79fdb8e 
PS2, Line 159: is not exist
> "does not exist"

Done