Merge branch 'bridge-mrp-next'

Horatiu Vultur says:

====================
bridge: mrp: Disable roles before deleting

The first patch in this series make sures that the driver is notified
that the role is disabled before the MRP instance is deleted. The
second patch uses this so it can simplify the driver.
====================

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