Add Model property to Cpu Interface

Follow the Redfish Schema for ProcessorId - EffectiveModel:
https://redfish.dmtf.org/schemas/v1/Processor.v1_12_0.json

Signed-off-by: Brandon Kim <brandonkim@google.com>
Change-Id: I4832c0b2155d9478286f63979a1383fe13d74d4c
diff --git a/yaml/xyz/openbmc_project/Inventory/Item/Cpu.interface.yaml b/yaml/xyz/openbmc_project/Inventory/Item/Cpu.interface.yaml
index 70e5718..fa241bf 100644
--- a/yaml/xyz/openbmc_project/Inventory/Item/Cpu.interface.yaml
+++ b/yaml/xyz/openbmc_project/Inventory/Item/Cpu.interface.yaml
@@ -11,6 +11,11 @@
           A free form string indicates processor family type.
           For example, values can be "Intel Xeon
           processor", "AS400 Family", etc.
+    - name: Model
+      type: string
+      description: >
+          The effective Model information as provided by the
+          manufacturer of this processor.
     - name: Id
       type: uint64
       description: >