Merge branch 'dpaa2-switch-STP'

Ioana Ciornei says:

====================
dpaa2-switch: add STP support

This patch set adds support for STP to the dpaa2-switch.

First of all, it fixes a bug which was determined by the improper usage
of bridge BR_STATE_* values directly in the MC ABI.
The next patches deal with creating an ACL table per port and trapping
the STP frames to the control interface by adding an entry into each
table.
The last patch configures proper learning state depending on the STP
state.
====================

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