SWDEV-339113 - Update sampl codes with correct kernel coordinate (#2704)

Change-Id: Ibfc0fd285441cd3d79b312d2b739729a039a6f84

samples/0_Intro/module_api_global/vcpy_kernel.cpp

@@ -28,11 +28,11 @@ __device__ float myDeviceGlobal;
 __device__ float myDeviceGlobalArray[16];
 
 extern "C" __global__ void hello_world(const float* a, float* b) {
-    int tx = hipThreadIdx_x;
+    int tx = threadIdx.x;
     b[tx] = a[tx];
 }
 
 extern "C" __global__ void test_globals(const float* a, float* b) {
-    int tx = hipThreadIdx_x;
+    int tx = threadIdx.x;
     b[tx] = a[tx] + myDeviceGlobal + myDeviceGlobalArray[tx % ARRAY_SIZE];
 }