From: Daniele Venzano <webvenza@libero.it>

Fix PHY transceiver detection code to fall back to known PHY and not to the
last detected.

The code checks every transceiver detected for link status and type, but fails
when ghost transceivers are detected, deciding to use the last one detected.

With this patch the driver should choose the correct transceiver even when
some ghosts are detected by checking for the type of the tranceiver it is
going to use.