Use the Radio Access Capabilites that are being transferred via BSSGP (downlink)
Parsing these RA Cap is prepared but not enabled, since the osmo SGSN sends bogus values. This should be fixed and the use of those RA Cap values should be enabled.
Note that the current analyse functions which extract the (EGPRS) MS class do not match the access type technologies field, which must be fixed. This is also relevant for the extraction of the 8PSK power class (see #2457)