Remove hip-hcc codes: Part three

1.Rename include/hip/hcc_detail/ as include/hip/amd_detail/

2.Rename include/hip/nvcc_detail/ as include/hip/nvidia_detail/

3.Create __HIP_PLATFORM_AMD__ to replace __HIP_PLATFORM_HCC__

4.Create __HIP_PLATFORM_NVIDIA__ to replace __HIP_PLATFORM_NVCC__

After hcc_detail, nvcc_detail, __HIP_PLATFORM_HCC__ and __HIP_PLATFORM_NVCC__
have been removed from upstream, they will be removed from hip runtime.

Change-Id: I1ae457effd739d6c25bca203c1724b026be21fce

tests/src/dynamicLoading/bit_extract_kernel.cpp

@@ -25,9 +25,9 @@ extern "C" __global__ void bit_extract_kernel(uint32_t* C_d, const uint32_t*
   size_t stride = hipBlockDim_x * hipGridDim_x;
 
   for (size_t i = offset; i < N; i += stride) {
-#ifdef __HIP_PLATFORM_HCC__
+#ifdef __HIP_PLATFORM_AMD__
     C_d[i] = __bitextract_u32(A_d[i], 8, 4);
-#else /* defined __HIP_PLATFORM_NVCC__ or other path */
+#else /* defined __HIP_PLATFORM_NVIDIA__ or other path */
     C_d[i] = ((A_d[i] & 0xf00) >> 8);
 #endif
   }