sim: cr16: use common configure options

In preparation for converting to nrun, call the common functions that
are needed.  This doesn't produce any new warnings, and the generated
code should be the same.

sim/cr16/interp.c

@@ -1401,6 +1401,14 @@ sim_set_callbacks (p)
   cr16_callback = p;
 }
 
+int
+sim_trace (SIM_DESC sd)
+{
+  sim_resume (sd, 0, 0);
+
+  return 1;
+}
+
 void
 sim_stop_reason (sd, reason, sigrc)
      SIM_DESC sd;