AP_Logger: mark CSRV non-streaming

the rate of CAN servo messages is controlled by the servo. Having this
streaming means we can miss logging when there is more than one CAN
servo.

In the future we will move to holding the CAN servo data in a data
structure like we do for ESCs, and then log at a regular rate, but for
now this fixes the issue

libraries/AP_Logger/LogStructure.h

@@ -1218,7 +1218,7 @@ LOG_STRUCTURE_FROM_AVOIDANCE \
       "TERR","QBLLHffHHf","TimeUS,Status,Lat,Lng,Spacing,TerrH,CHeight,Pending,Loaded,ROfs", "s-DU-mm--m", "F-GG-00--0", true }, \
 LOG_STRUCTURE_FROM_ESC_TELEM \
     { LOG_CSRV_MSG, sizeof(log_CSRV), \
-      "CSRV","QBfffBfffffB","TimeUS,Id,Pos,Force,Speed,Pow,PosCmd,V,A,MotT,PCBT,Err", "s#---%dvAOO-", "F-000000000-", true }, \
+      "CSRV","QBfffBfffffB","TimeUS,Id,Pos,Force,Speed,Pow,PosCmd,V,A,MotT,PCBT,Err", "s#---%dvAOO-", "F-000000000-", false }, \
     { LOG_PIDR_MSG, sizeof(log_PID), \
       "PIDR", PID_FMT,  PID_LABELS, PID_UNITS, PID_MULTS, true },  \
     { LOG_PIDP_MSG, sizeof(log_PID), \