media settings is not getting applied for 100G xcvrs

[shanshri]

In xcvrd media settings is looked upon based on the media_settings key in media_settings.json file. The key is derived from compliance_code in xcvr data.

In xcvrd the key for media_settings is derived only for "10/40G Ethernet Compliance Code" for QSFP28 transceivers.
Need to make changes in xcvrd so that other transceivers are also recognised for constructing media_settings key which can then be used to extract emphasis settigns from media_settings.json