Merge branch 'net-dsa-mv88e6xxx-further-ptp-related-cleanups'

Russell King says:

====================
net: dsa: mv88e6xxx: further PTP-related cleanups

Further mv88e6xxx PTP-related cleanups, mostly centred around the
register definitions, but also moving one function prototype to a
more logical header.
====================

Link: https://patch.msgid.link/aMnJ1uRPvw82_aCT@shell.armlinux.org.uk


Signed-off-by: Jakub Kicinski <kuba@kernel.org>