add pw_rpc.gni to light-switch

examples/light-switch-app/silabs/with_pw_rpc.gni

@@ -0,0 +1,29 @@
+# Copyright (c) 2021 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.
+
+# add this gni as import in your build args to use pigweed in the example
+# 'import("//with_pw_rpc.gni")'
+
+import("//build_overrides/chip.gni")
+import("${chip_root}/config/efr32/lib/pw_rpc/pw_rpc.gni")
+import("${chip_root}/examples/platform/silabs/args.gni")
+
+silabs_sdk_target = get_label_info(":sdk", "label_no_toolchain")
+
+app_data_model = "${chip_root}/examples/light-switch-app/light-switch-common"
+chip_enable_pw_rpc = true
+chip_enable_openthread = true
+
+# Light-Swithc app on EFR enables tracing server
+pw_trace_BACKEND = "$dir_pw_trace_tokenized"