fixed hipFunction memory management

Change-Id: I7ebb323419bcd220ebd6466a8eb38e7bfdb1520a

include/hip/hcc_detail/hip_runtime_api.h

@@ -30,6 +30,7 @@ THE SOFTWARE.
 
 #include <stdint.h>
 #include <stddef.h>
+#include <iostream>
 
 #include <hip/hcc_detail/host_defines.h>
 #include <hip/hip_runtime_api.h>
@@ -72,14 +73,7 @@ typedef struct ihipIpcEventHandle_t *hipIpcEventHandle_t;
 
 typedef struct ihipModule_t *hipModule_t;
 
-struct ihipModuleSymbol_t{
-    uint64_t    _object;             // The kernel object.
-    uint32_t    _groupSegmentSize;
-    uint32_t    _privateSegmentSize;
-    char        _name[64];       // TODO - review for performance cost.  Name is just used for debug.
-};
-
-typedef struct ihipModuleSymbol_t hipFunction_t;
+typedef struct ihipModuleSymbol_t *hipFunction_t;
 
 typedef void* hipDeviceptr_t;