[Bug 214021] The USB devices fail to be detected during boot

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https://bugzilla.kernel.org/show_bug.cgi?id=214021

--- Comment #12 from Alan Stern (stern@xxxxxxxxxxxxxxxxxxx) ---
I may have gotten the primary and secondary mixed up.  Anyway, the general idea
is simple: Don't register the first root hub along with the first hcd; instead
register both root hubs along with the second hcd.

The only problem is how to tell usb_hcd_add that the first hcd is going to be
shared.  You'll probably need to modify xhci-hcd slightly to make this
possible.  Maybe add a new flag.

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