usb: ehci/xhci: add hub descriptor in its ctrl structure

Since the "bNrPorts" in hub descriptor is runtime modified, and it may
be rewritten by the later initialized controller. So copy and maintain

usb: ehci/xhci: add hub descriptor in its ctrl structure

Since the "bNrPorts" in hub descriptor is runtime modified, and it may
be rewritten by the later initialized controller. So copy and maintain
a private instance for each controller.

Change-Id: I6cd05aef5251d05464b3eb1e9927661effa433ec
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>

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Merge branch 'next-dev' into thunder-boot

UPSTREAM: usb: xhci: move xhci.h to include usb

The xhci.h header file is currently located under drivers/usb/xhci
Move it to the include/usb folder to make it available to drivers that
are not unde

UPSTREAM: usb: xhci: move xhci.h to include usb

The xhci.h header file is currently located under drivers/usb/xhci
Move it to the include/usb folder to make it available to drivers that
are not under drivers/usb/xhci

Change-Id: I13705562893b30327708fbc321547bac79615785
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
(cherry picked from commit 1708a12377b98397606677e117f93f07d7cd2f7e)

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