Report HWIdle to SICS if the camera driver has been reset via halt().

site_ansto/hardsup/cameradriver.c

@@ -273,6 +273,7 @@ static int CamHalt(CounterDriver *cntrData) {
   } else {
     STset(&self->state_machine.Sc, start_state);
     EVclr(&self->state_machine.Eo);
+    self->status = HWIdle;
   }
   return 1;
 }