[FS#177] ipq806x: USB3 ports fail if booted when USB3 flash drives inserted during boot time

[LEDE Bugs]

The following task has a new comment added:

FS#177 - ipq806x: USB3 ports fail if booted when USB3 flash drives inserted during boot time
User who did this - dissent1 (dissent1)

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Not every usb3.0 device connected cause this USB port failure.

Want to propose the patch with HUB_ROOT_RESET_TIME change as a workaround? 

There's no other solution for now it seems.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=177#comment2035