chassis: Add StorageEnclosure as a ChassisType

StorageEnclosure is used to represent chassis with HDD or SSD.

Change-Id: Ie66405e4d229c2da714724e7a71f6d4e744f9dad
Signed-off-by: Willy Tu <wltu@google.com>
diff --git a/yaml/xyz/openbmc_project/Inventory/Item/Chassis.interface.yaml b/yaml/xyz/openbmc_project/Inventory/Item/Chassis.interface.yaml
index e946f80..13b279f 100644
--- a/yaml/xyz/openbmc_project/Inventory/Item/Chassis.interface.yaml
+++ b/yaml/xyz/openbmc_project/Inventory/Item/Chassis.interface.yaml
@@ -33,6 +33,9 @@
           description: >
               A single, free-standing system, commonly called a tower or
               desktop chassis.
+        - name: StorageEnclosure
+          description: >
+              A chassis that encloses storage.
         - name: Unknown
           description: >
               An unknown chassis type.