driver: net: fm: add support for XFI

All the 10G ports that were working in XFI mode were described as
using XGMII (as PHY_INTERFACE_MODE_XFI was not added at the time).
Add the minimal changes required for the FMan code to support XFI.

Signed-off-by: Madalin Bucur <madalin.bucur@oss.nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
1 file changed