net: sfp: don't include swphy.h

Nothing from swphy.h is used here, so don't include it.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/19921899-f0a8-4752-a897-1b6d62ade6eb@gmail.com


Signed-off-by: Paolo Abeni <pabeni@redhat.com>