Add image 1.1 API changes to current code base

Initial work to import the latest (1.1) hsa_ext_image extension.

Change-Id: I4d55adb09ba4d4dbd43d47a4bc54077d4bc531d2

runtime/hsa-runtime/loader/loaders.cpp

@@ -185,7 +185,7 @@ namespace loader {
     hsa_agent_t agent,
     hsa_access_permission_t image_permission,
     const hsa_ext_image_descriptor_t *image_descriptor,
-    const void *image_data,
+    void *image_data,
     hsa_ext_image_t *image_handle)
   {
     void* ptr = alignedMalloc(256, 8);

runtime/hsa-runtime/loader/loaders.hpp

@@ -89,7 +89,7 @@ namespace loader {
       hsa_agent_t agent,
       hsa_access_permission_t image_permission,
       const hsa_ext_image_descriptor_t *image_descriptor,
-      const void *image_data,
+      void *image_data,
       hsa_ext_image_t *image_handle) override;
 
     hsa_status_t ImageDestroy(