Added new Memory API's (#1399)

Added new memory API's hipMemAllocPitch, hipMemAllocHost, hipMemsetD16, hipMemsetD16Async, hipMemsetD8Async
Modified to support all scenarios hipMemcpyParam2DAsync, hipMemcpyParam2D.


[ROCm/hip commit: ba9c6e13e4]

projects/hip/tests/src/deviceLib/hipTestHalf.cpp

@@ -234,7 +234,7 @@ void checkFunctional() {
 
 int main() {
   bool* result{nullptr};
-  hipHostMalloc(&result, sizeof(result));
+  hipMemAllocHost((void**)&result, sizeof(result));
 
   result[0] = false;
   hipLaunchKernelGGL(