[PATCH 1/2] usb: fsl_mxc_udc.c: add workaround for ENGcm09152 for i.MX25

[Chen Peter-B29397]

> 
> this patch gives the possibility to workaround bug ENGcm09152
> on i.MX25 when the hardware workaround is also implemented on
> the board.
> It covers the workaround described on page 42 of the following Errata,
> titled "USB: UTMI_USBPHY VBUS input impedance implementation error" :
> http://cache.freescale.com/files/dsp/doc/errata/IMX25CE.pdf
> 

The two patches are ok, I am not sure if sascha is ok for these two
as there is cpu_is_xxx code although it is bug fix.