Refactor: Move the code generation related header files to include/polly/CodeGen.

llvm-svn: 155547
diff --git a/polly/lib/ScheduleOptimizer.cpp b/polly/lib/ScheduleOptimizer.cpp
index 171ed20..899712e 100644
--- a/polly/lib/ScheduleOptimizer.cpp
+++ b/polly/lib/ScheduleOptimizer.cpp
@@ -19,7 +19,7 @@
 
 #include "polly/ScheduleOptimizer.h"
 
-#include "polly/CodeGeneration.h"
+#include "polly/CodeGen/CodeGeneration.h"
 #include "polly/Dependences.h"
 #include "polly/LinkAllPasses.h"
 #include "polly/ScopInfo.h"