usb: chipidea: host: override ehci->hub_control

The chipidea controller has some special requirements during
suspend/resume, override common ehci->hub_control to implement
it.

Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Tested-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Peter Chen <peter.chen@nxp.com>