Merge branch 'sctp-add-another-two-stream-schedulers'

Xin Long says:

====================
sctp: add another two stream schedulers

All SCTP stream schedulers are defined in rfc8260#section-3,
First-Come First-Served, Round-Robin and Priority-Based
Schedulers are already added in kernel.

This patchset adds another two schedulers: Fair Capacity
Scheduler and Weighted Fair Queueing Scheduler.

Note that the left one "Round-Robin Scheduler per Packet"
Scheduler is not implemented by this patch, as it's still
intrusive to be added in the current SCTP kernel code.
====================

Link: https://lore.kernel.org/r/cover.1678224012.git.lucien.xin@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>