Merge branch 'mptcp-fixes'

Mat Martineau says:

====================
mptcp: Bug fixes

This patch set includes two separate fixes for the net tree:

Patch 1 makes sure that MPTCP token searches are always limited to the
appropriate net namespace.

Patch 2 allows userspace to always change the backup settings for
configured endpoints even if those endpoints are not currently in use.
====================

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