fixed hipArray issues

1. Fixed build issues produced from previous commit
2. Create new header files to manage data structures better

Change-Id: I704d82c196c1858ed7617d76e40612eb507d2aa0

hipamd/include/hip/math_functions.h

@@ -20,19 +20,6 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 */
 
-//! HIP = Heterogeneous-compute Interface for Portability
-//!
-//! Define a extremely thin runtime layer that allows source code to be compiled unmodified
-//! through either AMD HCC or NVCC.   Key features tend to be in the spirit
-//! and terminology of CUDA, but with a portable path to other accelerators as well:
-//
-//! Both paths support rich C++ features including classes, templates, lambdas, etc.
-//! Runtime API is C
-//! Memory management is based on pure pointers and resembles malloc/free/copy.
-//
-//! hip_runtime.h     : includes everything in hip_api.h, plus math builtins and kernel launch macros.
-//! hip_runtime_api.h : Defines HIP API.  This is a C header file and does not use any C++ features.
-
 #pragma once
 
 // Some standard header files, these are included by hc.hpp and so want to make them avail on both