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

[LEDE Bugs]

The following task is now closed:

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

Reason for closing: Implemented
Additional comments about closing: https://git.lede-project.org/?p=source.git;a=commit;h=4aa5d3e60d6007809a4b7fac9959645ef1600cf9

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=167