configurations: minerva: add SparePartNumber

Support xyz.openbmc_project.Inventory.Decorator.Asset with
SparePartNumber in minerva.

Change-Id: I85244825e85cc0cca3b32d5b82210a1825b45bb2
Signed-off-by: Yi-Shum <EasonChen1@quantatw.com>
diff --git a/configurations/minerva_cmm_bsm.json b/configurations/minerva_cmm_bsm.json
index 144dac0..599c3aa 100644
--- a/configurations/minerva_cmm_bsm.json
+++ b/configurations/minerva_cmm_bsm.json
@@ -15,6 +15,7 @@
         "Manufacturer": "$BOARD_MANUFACTURER",
         "Model": "$BOARD_PRODUCT_NAME",
         "PartNumber": "$BOARD_PART_NUMBER",
-        "SerialNumber": "$BOARD_SERIAL_NUMBER"
+        "SerialNumber": "$BOARD_SERIAL_NUMBER",
+        "SparePartNumber": "$BOARD_INFO_AM1"
     }
 }