RE: [PATCH v3] net: macb: add support for high speed interface

[Parshuram Raju Thombare]

>Whenever the interface changes, we go through the full reconfiguration
>procedure that I've already outlined. This involves calling the
>mac_prepare() method which calls into mvpp2_mac_prepare() and its
>child mvpp2__mac_prepare().

Ok, I misunderstood it as interface mode change between successive mac_prepare().
If major reconfiguration is certain to happen after every interface mode change,
I will make another small modification in mac_prepare method to set appropriate
pcs_ops for selected interface mode. 
pcs_ops for low speed, however, will just be existing non 10GBASE-R functions renamed.
This will allow us to get rid of old API's for non 10GBASE-R PCS. I hope you are ok with
these changes done in the same patch.