Merge branch 'net-phylink-cleanup-pcs-code'

Russell King says:

====================
net: phylink: cleanup pcs code

These two patches were part of the larger series for the mv88e6xxx
phylink pcs conversion. As this is delayed, I've decided to send these
two patches now.
====================

Link: https://lore.kernel.org/r/YrmYEC2N9mVpg9g6@shell.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>