[PATCH v2 2/2] net: stmmac: Add Ingenic SoCs MAC support.

[Andrew Lunn]

> Here is Ingenic's reply, the time length corresponding to a unit is 19.5ps
> (19500fs).

Sometimes, there is a negative offset in the delays. So a delay value
of 0 written to the register actually means -200ps or something.

   Andrew