[PATCH v3] arm: dts: ZII: update MDIO speed and preamble

[Shawn Guo]

On Tue, Jul 07, 2020 at 06:16:27PM -0700, Chris Healy wrote:
> Update MDIO configuration with ZII devices to fully utilize
> MDIO endpoint capabilities.  All devices support 12.5MHz clock and
> don't require MDIO preable.
> 
> Signed-off-by: Chris Healy <cphealy at gmail.com>
> Reviewed-by: Fabio Estevam <festevam at gmail.com>

We use prefix 'ARM: ...' for arm dts.  Fixed it up and applied the
patch.

Shawn