Merge branch 'sfc-prerequisites-for-EF100-driver-part-1'

Edward Cree says:

====================
sfc: prerequisites for EF100 driver, part 1

This continues the work started by Alex Maftei <amaftei@solarflare.com>
 in the series "sfc: code refactoring", "sfc: more code refactoring",
 "sfc: even more code refactoring" and "sfc: refactor mcdi filtering
 code", to prepare for a new driver which will share much of the code
 to support the new EF100 family of Solarflare/Xilinx NICs.
After this series, there will be approximately two more of these
 'prerequisites' series, followed by the sfc_ef100 driver itself.

v2: fix reverse xmas tree in patch 5.  (Left the cases in patches 7,
 9 and 14 alone as those are all in pure movement of existing code.)
====================

Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>