[HIPIFY][CUB][#1460][perl] Add "cub::" namespace prefix support in hipify-perl as well

[ROCm/hip commit: c48fdefee8]

projects/hip/bin/hipify-perl

@@ -1680,6 +1680,7 @@ sub transformKernelLaunch {
 sub transformCubNamespace {
     my $k = 0;
     $k += s/using\s*namespace\s*cub/using namespace hipcub/g;
+    $k += s/\bcub::\b/hipcub::/g;
     return $k;
 }
 

projects/hip/hipify-clang/src/CUDA2HIP_Perl.cpp

@@ -253,7 +253,8 @@ namespace perl {
 
   void generateCubNamespace(unique_ptr<ostream>& streamPtr) {
     *streamPtr.get() << endl << sub << "transformCubNamespace" << " {" << endl_tab << my_k << endl;
-    *streamPtr.get() << tab << "$k += s/using\\s*namespace\\s*cub/using namespace hipcub/g;" << endl << tab << return_k << "}" << endl;
+    *streamPtr.get() << tab << "$k += s/using\\s*namespace\\s*cub/using namespace hipcub/g;" << endl;
+    *streamPtr.get() << tab << "$k += s/\\bcub::\\b/hipcub::/g;" << endl << tab << return_k << "}" << endl;
   }
 
   void generateHostFunctions(unique_ptr<ostream>& streamPtr) {