Updating Microsemi Driver to onos-yang-tools 2.x

Change-Id: I80e3348087518a8f9a742c813b6238371a3f8f97
diff --git a/models/microsemi/BUCK b/models/microsemi/BUCK
new file mode 100644
index 0000000..58b8412
--- /dev/null
+++ b/models/microsemi/BUCK
@@ -0,0 +1,4 @@
+yang_model(
+    app_name = 'org.onosproject.models.microsemi',
+    title = 'Microsemi YANG Model',
+)