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

hipamd/samples/0_Intro/module_api/launchKernelHcc.cpp

@@ -26,7 +26,7 @@ THE SOFTWARE.
 #include <fstream>
 #include <vector>
 
-#ifdef __HIP_PLATFORM_HCC__
+#ifdef __HIP_PLATFORM_AMD__
 #include <hip/hip_ext.h>
 #endif