"ethtool -m" is cut short

Issue

• ethtool -m SFP diagnostic information is cut short on Broadcom bnxt_en driver.

Identifier
Extended identifier
Connector
Transceiver codes
Transceiver type
Encoding
BR, Nominal
Rate identifier
Length (SMF,km)
Length (SMF)
Length (50um)
Length (62.5um)
Length (Copper)
Length (OM3)
Active Cu cmplnce.
Vendor name
Vendor OUI
Vendor PN
Vendor rev
Option values
Option
Option
Option
BR margin, max
BR margin, min
Vendor SN
Date code

Missing information begins at:

Optical diagnostics support
Laser bias current
Laser output power
Receiver signal average optical power
Module temperature
Module voltage
Alarm/warning flags implemented
...