Added changes for new zap attributes

Author: shgutte

examples/refrigerator-app/silabs/build_for_wifi_args.gni

@@ -18,4 +18,4 @@ silabs_sdk_target = get_label_info(":sdk", "label_no_toolchain")
 import("${chip_root}/src/platform/silabs/wifi_args.gni")
 chip_enable_wifi = true
 chip_enable_ota_requestor = false
-app_data_model = "${chip_root}/examples/refrigerator-app/refrigerator-common"
+app_data_model = "${chip_root}/examples/refrigerator-app/silabs/data_model:silabs-refrigerator"

examples/refrigerator-app/silabs/data_model/BUILD.gn

@@ -0,0 +1,22 @@
+# Copyright (c) 2020 Project CHIP Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("//build_overrides/chip.gni")
+import("${chip_root}/src/app/chip_data_model.gni")
+import("${chip_root}/src/platform/device.gni")
+
+chip_data_model("silabs-refrigerator") {
+   zap_file = "refrigerator-app.zap"
+  is_server = true
+}