TOSA: Add support for Identity operation

Added support for Identity operation.

Signed-off-by: Patrik Gustavsson <patrik.gustavsson@arm.com>
Change-Id: If00b30528932f7531807ce3914d6c1875ab72fa4
diff --git a/ethosu/vela/operation.py b/ethosu/vela/operation.py
index b426792..1e733d5 100644
--- a/ethosu/vela/operation.py
+++ b/ethosu/vela/operation.py
@@ -189,7 +189,7 @@
     GreaterEqual = OperatorInfo()
     HardSwish = OperatorInfo(indices=NNG_IFM_INDICES)
     HashtableLookup = OperatorInfo()
-    Identity = OperatorInfo()
+    Identity = OperatorInfo(indices=NNG_IFM_INDICES)
     If = OperatorInfo()
     L2Norm = OperatorInfo()
     L2Pool2D = OperatorInfo()