[FS#936] mt7620: archer c50 - broken 5GHz radio because of broken PCI init in 4.9

[LEDE Bugs]

The following task has a new comment added:

FS#936 - mt7620: archer c50 - broken 5GHz radio because of broken PCI init in 4.9
User who did this - nopnopnop (nopnopnop)

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That PR fixes the problem. Thank you.

I'll request that this get closed.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=936#comment3177