Merge branch 'stmmac-mq-part3'

Joao Pinto says:

====================
net: stmmac: adding multiple buffers and routing

As agreed with David Miller, this patch-set is the third and last to enable
multiple queues in stmmac.

This third one focuses on:

a) Enable multiple buffering to the driver and queue independent data
b) Configuration of RX and TX queues' priority
c) Configuration of RX queues' routing
====================

Signed-off-by: David S. Miller <davem@davemloft.net>