Merge branch 'mptcp-addr-adv-fixes'

Mat Martineau says:

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mptcp: Fixes for address advertisement

Patches 1 and 2 allow address advertisements to be removed without
affecting current connected subflows, and updates associated self tests.

Patches 3 and 4 correctly track (and allow removal of) addresses that
were implicitly announced as part of subflow creation. Also updates
associated self tests.

Patch 5 makes subflow and address announcement counters work consistently
between the userspace and in-kernel path managers.
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Signed-off-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>