[PATCH 1/3] usb: ehci: add freescale imx28 special write register method

[Alan Stern]

On Wed, 23 Oct 2013, Peter Chen wrote:

> According to Freescale imx28 Errata, "ENGR119653 USB: ARM to USB
> register error issue", All USB register write operations must
> use the ARM SWP instruction. So, we implement a special ehci_write
> for imx28.
> 
> Discussion for it at below:
> http://marc.info/?l=linux-usb&m=137996395529294&w=2
> 
> Signed-off-by: Peter Chen <peter.chen at freescale.com>

Acked-by: Alan Stern <stern at rowland.harvard.edu>