configurations: yosemite4 : Add SparePartNumber

Support xyz.openbmc_project.Inventory.Decorator.Asset with
SparePartNumber in yv4.

Change-Id: Ic66068e1be300ff440b331ebf14947d5611bcba5
Signed-off-by: Delphine CC Chiu <Delphine_CC_Chiu@wiwynn.com>
diff --git a/configurations/yosemite4_sentineldome.json b/configurations/yosemite4_sentineldome.json
index 335a323..4d71cb9 100644
--- a/configurations/yosemite4_sentineldome.json
+++ b/configurations/yosemite4_sentineldome.json
@@ -15,7 +15,8 @@
         "Manufacturer": "$PRODUCT_MANUFACTURER",
         "Model": "$PRODUCT_PRODUCT_NAME",
         "PartNumber": "$PRODUCT_PART_NUMBER",
-        "SerialNumber": "$PRODUCT_SERIAL_NUMBER"
+        "SerialNumber": "$PRODUCT_SERIAL_NUMBER",
+        "SparePartNumber": "$BOARD_INFO_AM1"
     },
     "xyz.openbmc_project.Inventory.Decorator.AssetTag": {
         "AssetTag": "$PRODUCT_ASSET_TAG"