Cadence macb on SAM9G25 running 3.16.1

[Phil Sutter]

Hi,

I am trying to understand if any patches might be necessary for best
performance of macb Ethernet support on 3.16.1 running on a SAM9G25.  My
reason for asking is that I am seeing some receive framing errors and
dropped packets under heavy file transfer load.  

Thanks,
Phil