[FS#174] Significant MT76 degradation after recent fq reordering changes

[LEDE Bugs]

The following task has a new comment added:

FS#174 - Significant MT76 degradation after recent fq reordering changes
User who did this - Felix Fietkau (nbd)

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I fixed some more issues, including the fq related breakage affecting mt76.
Please test the latest version again
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=174#comment765