F16 Fully Connected operator

PiperOrigin-RevId: 405524283
diff --git a/src/xnnpack/operator.h b/src/xnnpack/operator.h
index a8b835d..4b96a06 100644
--- a/src/xnnpack/operator.h
+++ b/src/xnnpack/operator.h
@@ -65,6 +65,7 @@
   xnn_operator_type_divide_nd_f32,
   xnn_operator_type_elu_nc_f32,
   xnn_operator_type_elu_nc_qs8,
+  xnn_operator_type_fully_connected_nc_f16,
   xnn_operator_type_fully_connected_nc_f32,
   xnn_operator_type_fully_connected_nc_qs8,
   xnn_operator_type_fully_connected_nc_qu8,