[FS#167] Enable sfp in kernel for clearfog pro

[LEDE Bugs]

The following task has a new comment added:

FS#167 - Enable sfp in kernel for clearfog pro 
User who did this - Mathias Kresin (mkresin)

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As you already got told on IRC:

- it's not just a config option that have to be enabled
- send a patch to get a feature added

This is a _bug_ tracker for tracking bugs and not a tracker for feature requests.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=167#comment390