[S] Change in flashrom[main]: Use SPDX in cli_getop files

[Antonio Vázquez Blanco (Code Review)]

Antonio Vázquez Blanco has posted comments on this change by Antonio Vázquez Blanco. ( https://review.coreboot.org/c/flashrom/+/85073?usp=email )

Change subject: Use SPDX in cli_getop files
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Patch Set 2:

(1 comment)

Patchset:

PS2: 
Knowing that in general you want to keep a single header style among all prohect files, should I drop this in favour of you possibly changing all headers in all files at once? Thanks!