Merge branch 'constify-sfp-phy-nodes'

Russell King says:

====================
Constify a few sfp/phy fwnodes

This series constifies a bunch of fwnode_handle pointers that are only
used to refer to but not modify the contents of the fwnode structures.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>