Add "Exposes BMC" fields to configurations

The field is added to the JSON configurations such that when
Entity-Manager detects the corresponding board, an Inventory.Item.BMC
item is created to represent the BMC that runs the current OpenBMC
instance.

Signed-off-by: Sui Chen <suichen@google.com>
Change-Id: I9f1ba1ad107b183edd4a557a27a4865596d68d13
diff --git a/configurations/mt_jade.json b/configurations/mt_jade.json
index 71120e9..6e5ba9a 100644
--- a/configurations/mt_jade.json
+++ b/configurations/mt_jade.json
@@ -1001,6 +1001,10 @@
                 "Type": "AspeedFan"
             },
             {
+                "Name": "BMC",
+                "Type": "BMC"
+            },
+            {
                 "Address": "$address",
                 "Bus": "$bus",
                 "Name": "MB FRU",