Revert "Revert adoption of CUDA indexing in general - this can only work with later versions of the compiler, just like module based dispatch, and thus must be guarded against usage in earlier (e.g. 1.6) versions."

This reverts commit 4792475

hipamd/tests/src/kernel/hipDynamicShared.cpp

@@ -40,8 +40,8 @@ __global__ void testExternSharedKernel(hipLaunchParm lp, const T* A_d, const T*
     T *sdata = reinterpret_cast<T *>(my_sdata);
 #endif
 
-    size_t gid = (hipBlockIdx_x * hipBlockDim_x + hipThreadIdx_x);
-    size_t tid = hipThreadIdx_x;
+    size_t gid = (blockIdx.x * blockDim.x + threadIdx.x);
+    size_t tid = threadIdx.x;
 
     // initialize dynamic shared memory
     if (tid < groupElements) {