cpu/atmega_common: make vera++ happy #19779
Merged
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Contribution description
Vera++ doesn't like
#error
preprocessor directives without a quoted string afterwards (and also my syntax highlighter doesn't like this as well). So let's add the quotes to have the tools not spooked out.Testing procedure
Green CI and no vera++ annotations on the changed file.
Issues/PRs references
The vera++ annotations cluttered the source view when reviewing #19777, despite none of the annotations being relevant to the PR changes.