More p4runtime-related bazel build files

Change-Id: Icdd02a06d7905e4cd0a6c61d282fd522c7b75fe7
diff --git a/protocols/gnmi/BUILD b/protocols/gnmi/BUILD
new file mode 100644
index 0000000..56ed52c
--- /dev/null
+++ b/protocols/gnmi/BUILD
@@ -0,0 +1,16 @@
+BUNDLES = [
+    "//protocols/gnmi/stub:gnmi_java_grpc",
+    "//protocols/gnmi/stub:gnmi_java_proto",
+]
+
+onos_app(
+    app_name = "org.onosproject.protocols.gnmi",
+    title = "gNMI Protocol Subsystem",
+    category = "Protocol",
+    url = "http://onosproject.org",
+    description = "ONOS gNMI protocol subsystem",
+    included_bundles = BUNDLES,
+    required_apps = [
+        "org.onosproject.protocols.grpc"
+    ],
+)