[PATCH 07/11] MXS: Add separate MXS EHCI HCD driver

[Chen Peter-B29397]

> 
> This driver will handle i.MX233/i.MX28 and I hope soon i.MX6Q. I tried to
> keep
> this separate from the MXC EHCI to avoid further polution of the MXC EHCI,
> though eventually these two might be merged.
> 
> NOTE: I still haven't figured out how to enable/disable the disconnection
> detector, it can't be enabled all the time, so I toggle PHY stuff from
> this
> driver, which I doubt is correct.
> 
 
still not understand high speed disconnect detector?
I may explain it twice during reviewing.