configurations: yosemite4 : Add AssetTag

Support xyz.openbmc_project.Inventory.Decorator.AssetTag in yv4.

Change-Id: I25673a07750e95b9a77e2f0360b53fd2d49e146e
Signed-off-by: Delphine CC Chiu <Delphine_CC_Chiu@wiwynn.com>
diff --git a/configurations/yosemite4.json b/configurations/yosemite4.json
index c372ec3..1ad81b4 100644
--- a/configurations/yosemite4.json
+++ b/configurations/yosemite4.json
@@ -549,5 +549,8 @@
         "Model": "$PRODUCT_PRODUCT_NAME",
         "PartNumber": "$PRODUCT_PART_NUMBER",
         "SerialNumber": "$PRODUCT_SERIAL_NUMBER"
+    },
+    "xyz.openbmc_project.Inventory.Decorator.AssetTag": {
+        "AssetTag": "$PRODUCT_ASSET_TAG"
     }
 }