Moved the switched version of kernel_stats.hh back to kern, and moved the base kernel_stats to base_kernel_stats

--HG--
extra : convert_revision : 2a010d2eb7ea2586ff063b99b8bcde6eb1e8e017

src/cpu/o3/thread_context_impl.hh

@@ -194,7 +194,7 @@ void
 O3ThreadContext<Impl>::regStats(const std::string &name)
 {
 #if FULL_SYSTEM
-    thread->kernelStats = new Kernel::Statistics(cpu->system);
+    thread->kernelStats = new TheISA::Kernel::Statistics(cpu->system);
     thread->kernelStats->regStats(name + ".kern");
 #endif
 }