!11511 Fix GPU BiasAdd NHWC data format problem

From: @TFbunny
Reviewed-by: @tom__chen,@robingrosman
Signed-off-by: @robingrosman

mindspore/core/abstract/prim_nn.cc

@@ -530,7 +530,7 @@ AbstractBasePtr InferImplBiasAdd(const AnalysisEnginePtr &, const PrimitivePtr &
   ShapeVector x_min_shape = x->shape()->min_shape();
   ShapeVector x_max_shape = x->shape()->max_shape();
   std::set<std::string> available_data_format{"NCHW", "NHWC"};
-  auto data_format_ptr = primitive->GetAttr("data_format");
+  auto data_format_ptr = primitive->GetAttr("format");
   std::string data_format = "NCHW";
   if ((data_format_ptr != nullptr) && data_format_ptr->isa<StringImm>()) {
     data_format = data_format_ptr->cast<StringImmPtr>()->value();