configurations: mtjefferson: add missing Probe setting

This adds missing Probe setting for PowerSupply.

Fixes openbmc/entity-manager#34

Tested: CI passed.

Signed-off-by: Hieu Huynh <hieuh@os.amperecomputing.com>
Change-Id: Iab458e095c6f34998ce4ad02c59bb719fe5e9233
diff --git a/configurations/mtjefferson_mb.json b/configurations/mtjefferson_mb.json
index 49134bc..dd7bd27 100644
--- a/configurations/mtjefferson_mb.json
+++ b/configurations/mtjefferson_mb.json
@@ -1992,7 +1992,9 @@
         "Probe": [
             "xyz.openbmc_project.FruDevice({'BUS': 24, 'ADDRESS': 80})",
             "OR",
-            "xyz.openbmc_project.FruDevice({'BUS': 24, 'ADDRESS': 81})"
+            "xyz.openbmc_project.FruDevice({'BUS': 24, 'ADDRESS': 81})",
+            "AND",
+            "FOUND('Mt.Jefferson_Motherboard')"
         ],
         "Type": "PowerSupply",
         "xyz.openbmc_project.Inventory.Decorator.Asset": {