Merge branch 'net-smc-add-failover-processing'

Karsten Graul says:

====================
net/smc: add failover processing

This patch series adds the actual SMC-R link failover processing and
improved link group termination. There will be one more (very small)
series after this which will complete the SMC-R link failover support.
====================

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