copter-0: move timing analysis startpoint to correct postion

app/benchmark/timing/copter.cc

@@ -30,6 +30,7 @@ TIMING_MAKE_OS_MAIN( StartOS(0) )
 int round;
 
 TASK(SignalGatherInitiateTask) {
+    timing_start(0);
 	GetResource(SPIBus);
 	calculation();
 	if ((round % 2) == 0) {
@@ -45,7 +46,6 @@ TASK(SignalGatherInitiateTask) {
 }
 
 TASK(SignalGatherFinishedTask) {
-    timing_start(0);
     calculation();
     ActivateTask(SignalProcessingAttitudeTask);
     calculation();