[PATCH v4] net: ethernet: stmmac: dwmac-rk: Add GMAC support for px30

[davem@xxxxxxxxxxxxx (David Miller)]

From: David Wu <david.wu@xxxxxxxxxxxxxx>
Date: Thu, 28 Jun 2018 09:33:21 +0800

> Add constants and callback functions for the dwmac on px30 Soc.
> The base structure is the same, but registers and the bits in
> them are moved slightly, and add the clk_mac_speed for selecting
> mac speed.
> 
> Signed-off-by: David Wu <david.wu at rock-chips.com>

Applied.