generic: add quirk for HG MXPD-483II 2500M fiber SFP

generic: add quirk for HG MXPD-483II 2500M fiber SFP

The HG MXPD-483II 1310nm SFP module is meant to operate with 2500Base-X,
however, in their EEPROM they incorrectly specify:
    Transceiver type                          : Ethernet: 1000BASE-LX
    ...
    BR, Nominal                               : 2600MBd

Use sfp_quirk_2500basex for this module to allow 2500Base-X mode anyway.

https://forum.banana-pi.org/t/bpi-r3-sfp-module-compatibility/14573/60

X-Patchwork-Id: 13197378
X-Mailing-List: [email protected]
X-Patchwork-Delegate: [email protected]
Reported-by: chowtom <[email protected]>
Tested-by: chowtom <[email protected]>
Signed-off-by: Daniel Golle <[email protected]>