Revert "firmware: eth: use libmppaeth_utils to get default lane speed"
Revert "firmware: eth: use libmppaeth_utils to get default lane speed"

This reverts commit c58b726d9d8fa4aa6613e8ca366670dac1131e25.

kalray/odp-mppa,kalray/odp-mppa,kalray/odp-mppa,kalray/odp-mppa,kalray/odp-mppa,kalray/odp-mppa,kalray/odp-mppa