VOL-1646 : Allow mfr description to be VOLTHA Project

           Used MfrDesc field in OfpDesc message from openflow_13.proto
           to add the mfr description field to "VOLTHA Project"

Change-Id: I40c4f8b3cc6ce001f24f36ea9cca9036ebd6407c
diff --git a/adaptercore/device_handler.go b/adaptercore/device_handler.go
index 2bbfe92..99d0d01 100644
--- a/adaptercore/device_handler.go
+++ b/adaptercore/device_handler.go
@@ -462,6 +462,7 @@
 func (dh *DeviceHandler) GetOfpDeviceInfo(device *voltha.Device) (*ic.SwitchCapability, error) {
 	return &ic.SwitchCapability{
 		Desc: &of.OfpDesc{
+			MfrDesc:   "VOLTHA Project",
 			HwDesc:    "open_pon",
 			SwDesc:    "open_pon",
 			SerialNum: dh.device.SerialNumber,