MLBEDSW-6832 PReLU support in Vela

Added PReLU support in graph optimiser.

Signed-off-by: Fredrik Svedberg <fredrik.svedberg@arm.com>
Change-Id: I3a188675e3edcdf0b4a4bfcdd134fda0bf8a560f
diff --git a/ethosu/vela/operation.py b/ethosu/vela/operation.py
index 47f4fe0..54e823a 100644
--- a/ethosu/vela/operation.py
+++ b/ethosu/vela/operation.py
@@ -229,7 +229,7 @@
     PadV2 = OperatorInfo()
     Placeholder = OperatorInfo()  # Only used in CPU subgraphs
     Pow = OperatorInfo()
-    Prelu = OperatorInfo()
+    Prelu = OperatorInfo(indices=NNG_IFM_IFM2_INDICES)
     Prod = OperatorInfo()
     Quantize = OperatorInfo(indices=NNG_IFM_INDICES)
     QuantizedAvgPool = OperatorInfo(block_type=NpuBlockType.Pooling, indices=NNG_IFM_INDICES)