sdhci_fdt ignores clock-frequency property in .dtb

[Ian Lepore]

On Tue, 2014-04-29 at 14:35 -0700, Thomas Skibo wrote:
> Another Zynq bug-fix.  One Zynq board out there needs to set this 
> property or else the SD card gets clocked too fast.
> 
> Thanks,
> 

The documented property for this is max-frequency rather than
clock-frequency.  Is this a completely new property for us, or are you
just making the code honor what's in our existing dts files?  Either way
we should use the documented name, I'm just wondering if we need to fix
dts files and give folks a heads-up about the change.

-- Ian