Merge branch 'bridge-mrp-Add-support-for-getting-the-status'

Horatiu Vultur says:

====================
bridge: mrp: Add support for getting the status

This patch series extends the MRP netlink interface to allow the userspace
daemon to get the status of the MRP instances in the kernel.

v3:
  - remove misleading comment
  - fix to use correctly the RCU

v2:
  - fix sparse warnings
====================

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