SWDEV-269439 - Fix dtests build failure on HIP CUDA

Change-Id: Ibdba5d364df1bcd3b9e158e22a602dd993044d7a

tests/src/kernel/hipDynamicShared.cpp

@@ -74,7 +74,7 @@ __global__ void testExternSharedKernel(const T* A_d, const T* B_d, T* C_d,
 }
 
 template <typename T>
-void testExternShared(size_t N, size_t groupElements) {
+void testExternShared(size_t N, unsigned groupElements) {
     size_t Nbytes = N * sizeof(T);
 
     T *A_d, *B_d, *C_d;