systemc: Don't run clocked thread processes during the init phase.

Change-Id: I170d67fef61dd5536a842a1f64682d90ae7a1507
Reviewed-on: https://gem5-review.googlesource.com/12211
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>

src/systemc/core/sc_module.cc

@@ -61,6 +61,7 @@ newCThreadProcess(const char *name, ProcessFuncWrapper *func)
 {
     Process *p = new CThread(name, func);
     scheduler.reg(p);
+    p->dontInitialize();
     return p;
 }