VOL-3852: Added DEVICE_UNREACHABLE error reason

Change-Id: I1c75b5380da0344d3087d396ea161739e8dbb630
diff --git a/protos/dmi/hw_events_mgmt_service.proto b/protos/dmi/hw_events_mgmt_service.proto
index 2387420..56f6068 100644
--- a/protos/dmi/hw_events_mgmt_service.proto
+++ b/protos/dmi/hw_events_mgmt_service.proto
@@ -107,6 +107,7 @@
         UNDEFINED_REASON = 0;

         UNKNOWN_DEVICE = 1;

         INTERNAL_ERROR = 2;

+        DEVICE_UNREACHABLE = 3;

     }

     Status status = 1;

     Reason reason = 2;

@@ -127,6 +128,7 @@
         UNKNOWN_DEVICE = 1;

         INTERNAL_ERROR = 2;

         INVALID_CONFIG = 3;

+        DEVICE_UNREACHABLE = 4;

     }

     Status status = 1;

     Reason reason = 2;