jMAVSim: update submodule, use -lockstep CLI arg

This updates the jMAVSim submodule which includes a fix for HITL.
In order to fix HITL, a CLI argument `-lockstep` was required to enable
lockstep. This has now been added to the command in jmavsim_run.sh.

jMAVSim @ 0c25b7c1

-Subproject commit 00bdf6d92b6a8678f5b683a3ebca9e52e88cb5ce
+Subproject commit 0c25b7c18990a64fc851cfd7fe3aac9a4060aea3

Tools/jmavsim_run.sh

@@ -61,11 +61,11 @@ fi
 ant create_run_jar copy_res
 cd out/production
 
-java -XX:GCTimeRatio=20 -Djava.ext.dirs= -jar jmavsim_run.jar $device $extra_args
+java -XX:GCTimeRatio=20 -Djava.ext.dirs= -jar jmavsim_run.jar -lockstep $device $extra_args
 ret=$?
 if [ $ret -ne 0 -a $ret -ne 130 ]; then # 130 is Ctrl-C
 	# if the start of java fails, it's probably because the GC option is not
 	# understood. Try starting without it
-	java -Djava.ext.dirs= -jar jmavsim_run.jar $device $extra_args
+	java -Djava.ext.dirs= -jar jmavsim_run.jar -lockstep $device $extra_args
 fi