[SDFAB-1048] Fix wiring issue caused by readPortId

Leverage the dep already in place between gnmi driver and gnmi protocol
and expose readPortId as cfg property of GnmiControllerImpl

Change-Id: I34defd8928589129dc84cae45033f7f7c3c673bb
diff --git a/drivers/gnmi/BUILD b/drivers/gnmi/BUILD
index 772ae88..e3535cc 100644
--- a/drivers/gnmi/BUILD
+++ b/drivers/gnmi/BUILD
@@ -6,6 +6,7 @@
     "//core/store/serializers:onos-core-serializers",
     "//protocols/gnmi/stub:onos-protocols-gnmi-stub",
     "//protocols/gnmi/api:onos-protocols-gnmi-api",
+    "//protocols/gnmi/ctl:onos-protocols-gnmi-ctl",
     "//protocols/grpc/api:onos-protocols-grpc-api",
     "//protocols/grpc/utils:onos-protocols-grpc-utils",
 ]