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

samples/1_Utils/hipInfo/README.md

@@ -3,4 +3,4 @@
 Simple tool that prints properties for each device (from hipGetDeviceProperties), and compiler info.
     Properties includes all of the architectural feature flags for each device.
 
-Also demonstrates how to use platform-specific compilation path (testing `__HIP_PLATFORM_NVCC__` or `__HIP_PLATFORM_HCC__`)
+Also demonstrates how to use platform-specific compilation path (testing `__HIP_PLATFORM_AMD__` or `__HIP_PLATFORM_NVIDIA__`)

samples/1_Utils/hipInfo/hipInfo.cpp

@@ -171,7 +171,7 @@ void printDeviceProp(int deviceId) {
     cout << endl;
 
 
-#ifdef __HIP_PLATFORM_NVCC__
+#ifdef __HIP_PLATFORM_NVIDIA__
     // Limits:
     cout << endl;
     printLimit(w1, cudaLimitStackSize, "bytes/thread");