FC supports all variants of Conv2D so re-write all suitable Convs as FC

PiperOrigin-RevId: 724272831

src/subgraph/convolution-2d.c

@@ -1300,21 +1300,13 @@ enum xnn_status xnn_define_convolution_2d(
     }
   }
 
-  const enum xnn_datatype input_datatype = input_value->datatype;
-  const enum xnn_datatype output_datatype = output_value->datatype;
-  if (input_datatype == xnn_datatype_fp32
-      || input_datatype == xnn_datatype_fp16
-      || input_datatype == xnn_datatype_qint8) {
-    if (input_value->datatype == output_datatype) {
-      const bool unit_subsampling = (subsampling_width | subsampling_height) == 1;
-      const size_t kernel_size = kernel_height * kernel_width;
-      if (groups == 1 && kernel_size == 1 && unit_subsampling && !any_padding) {
-        // Check if the convolution can take the vmulcaddc path.
-        if (group_input_channels + group_output_channels > 2) {
-          return xnn_define_fully_connected(subgraph, output_min, output_max,
-                                            input_id, filter_id, bias_id, output_id, /*flags=*/0);
-        }
-      }
+  const bool unit_subsampling = (subsampling_width | subsampling_height) == 1;
+  const size_t kernel_size = kernel_height * kernel_width;
+  if (groups == 1 && kernel_size == 1 && unit_subsampling && !any_padding) {
+    // Check if the convolution can take the vmulcaddc path.
+    if (group_input_channels + group_output_channels > 2) {
+      return xnn_define_fully_connected(subgraph, output_min, output_max,
+                                        input_id, filter_id, bias_id, output_id, /*flags=*/0);
     }
   }
   struct xnn_node* node = xnn_subgraph_new_node(subgraph);