Rename hip/hip_hcc.h to hip/hip_ext.h (#1341)

* Rename hip/hip_hcc.h to hip/hip_ext.h

* Deprecate hip_hcc.h

samples/0_Intro/module_api/launchKernelHcc.cpp

@@ -27,7 +27,7 @@ THE SOFTWARE.
 #include <vector>
 
 #ifdef __HIP_PLATFORM_HCC__
-#include <hip/hip_hcc.h>
+#include <hip/hip_ext.h>
 #endif
 
 #define LEN 64

samples/0_Intro/module_api_global/runKernel.cpp

@@ -25,7 +25,7 @@ THE SOFTWARE.
 #include <iostream>
 #include <fstream>
 #include <vector>
-#include <hip/hip_hcc.h>
+#include <hip/hip_ext.h>
 
 #define LEN 64
 #define SIZE LEN * sizeof(float)

samples/2_Cookbook/11_texture_driver/texture2dDrv.cpp

@@ -21,11 +21,9 @@ THE SOFTWARE.
 */
 
 #include "hip/hip_runtime.h"
-//#include "hip/hip_runtime_api.h"
 #include <iostream>
 #include <fstream>
 #include <vector>
-//#include <hip/hip_hcc.h>
 
 #define fileName "tex2dKernel.code"