ENHANCED MEASUREMENT REPORT
We don't support this yet, neither the associated Bter frame format
Whether or not this message is needed is primarily dependent on whether
the BSC instructs the MS to use ENHANCED MEASUREMENT REPORT.
The same topic exists with EXTENDED MEAUSUREMENT REPORT / EXTENDED
OsmoBSC / OsmoNITB use neither, so it is not a requirement to OsmoBTS,
unless you want to use it with a different BSC.