Adding Bazel support for YANG models.

Change-Id: Icdb620bdb99ae9eeb042a84a8ca7563588c813c1
diff --git a/models/huawei/BUILD b/models/huawei/BUILD
new file mode 100644
index 0000000..5a0a8a0
--- /dev/null
+++ b/models/huawei/BUILD
@@ -0,0 +1,7 @@
+load("//tools/build/bazel:yang.bzl", "yang_model")
+
+yang_model (
+  app_name = "org.onosproject.models.huawei",
+  title = "Huawei YANG Models",
+  custom_registrator = True,
+)