etas_es58x devlink support

This document describes the devlink features implemented by the etas_es58x device driver.

Info versions

The etas_es58x driver reports the following versions

devlink info versions implemented

Name	Type	Description
fw	running	Version of the firmware running on the device. Also available through ethtool -i as the first member of the firmware-version.
fw.bootloader	running	Version of the bootloader running on the device. Also available through ethtool -i as the second member of the firmware-version.
board.rev	fixed	The hardware revision of the device.
serial_number	fixed	The USB serial number. Also available through lsusb -v.