Add chassis type to Inventory.Item.Chassis.

The use case is for the ipmi-fru-parser to store the chassis type
from IPMI FRU data in the inventory. The phosphor-host-ipmid can use
the field when generating IPMI FRU data for the host.

Change-Id: Ic9d636ae8f3a87ee3448345b8260ad32f10d381e
Signed-off-by: Oskar Senft <osk@google.com>
diff --git a/xyz/openbmc_project/Inventory/Item/Chassis.interface.yaml b/xyz/openbmc_project/Inventory/Item/Chassis.interface.yaml
index 6542cc0..3320ea1 100644
--- a/xyz/openbmc_project/Inventory/Item/Chassis.interface.yaml
+++ b/xyz/openbmc_project/Inventory/Item/Chassis.interface.yaml
@@ -1,4 +1,10 @@
 description: >
     Implement to provide Chassis attributes.
 
+properties:
+    - name: Type
+      type: string
+      description: >
+          The type of physical form factor of the chassis.
+
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