Addition of Fabric adapter interface

This commit adds an interface to define attributes of a
Fabric adapter.

Current use case:
Pcie cards need to implement this interface to be modeled as
fabric adapter via Redfish schema.

Signed-off-by: Sunny Srivastava <sunnsr25@in.ibm.com>
Change-Id: Id6dcd3e539246a37f6a886f724d8d5b3a2737133
diff --git a/xyz/openbmc_project/Inventory/Item/FabricAdapter.interface.yaml b/xyz/openbmc_project/Inventory/Item/FabricAdapter.interface.yaml
new file mode 100644
index 0000000..b355c9c
--- /dev/null
+++ b/xyz/openbmc_project/Inventory/Item/FabricAdapter.interface.yaml
@@ -0,0 +1,6 @@
+description: >
+    Implement to provide fabric adapter attributes.
+    A physical fabric adapter capable of connecting
+    to an interconnect fabric. Examples include but
+    are not limited to Ethernet, NVMe over Fabrics,
+    etc.