sfc: Merge top-level functions for self-tests

Pass in ethtool test flags to determine which tests to run.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/sfc/ethtool.c
Simple merge

diff --cc drivers/net/sfc/selftest.c
Simple merge

diff --cc drivers/net/sfc/selftest.h
Simple merge