[SYCL] Minor fix

Signed-off-by: Hu, Peisen <[email protected]>

Author: HPS-1

sycl/test-e2e/ClusterLaunch/cluster_launch_parallel_for.cpp

@@ -11,6 +11,8 @@
 #include <string>
 
 template <int Dim> struct KernelFunctor {
+  using namespace sycl::ext::oneapi::experimental;
+
   int *mCorrectResultFlag;
   cuda::cluster_size mClusterDims;
   sycl::range<Dim> mClusterRange;