[FS#57] brcm47xx-legacy target not always catching changes to files overlay

[LEDE Bugs]

The following task has a new comment added:

FS#57 - brcm47xx-legacy target not always catching changes to files overlay
User who did this - Felix Fietkau (nbd)

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Is this issue still present in the current version?
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=57#comment152