[coreboot-gerrit] Change in coreboot[master]: Drop explicit NULL initializations from `device_operations`

[Angel Pons (Code Review)]

Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/40126 )

Change subject: Drop explicit NULL initializations from `device_operations`
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Patch Set 6:
> Patch Set 6:
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> What was the DEVICE_NOOP introduced for then?

It was introduced in CB:7283 to replace the various equivalents around the tree. Personally, if the default value is null, then it's simpler to not have anything at all and check for null before dereferencing the function pointer.