change funtion name (#1598)

* optimize GPU conv performance and structure

* add CL macro for test_conv_gpu

* fix build failure

* change funtion name

* change funtion name

src/framework/cl/cl_image.h

@@ -146,7 +146,7 @@ class CLImage {
     DLOG << " end init cl image";
   }
 
-  void InitEmpty(cl_context context, cl_command_queue command_queue,
+  void InitEmptyWithImageDim(cl_context context, cl_command_queue command_queue,
                              const DDim &image_dims) {
     DLOG << " to get image dims ";
     image_dims_ = image_dims;