MLBEDSW-1716: Transpose Convolution support

Change-Id: Ie6d8d6de9f3447f19ba06aafa9fa480fc96a973b
Signed-off-by: Jacob Bohlin <jacob.bohlin@arm.com>
diff --git a/ethosu/vela/operation.py b/ethosu/vela/operation.py
index e8a03b7..51311ef 100644
--- a/ethosu/vela/operation.py
+++ b/ethosu/vela/operation.py
@@ -75,6 +75,9 @@
                 if len(self.inputs) >= 3:
                     bias_idx = 2
 
+            elif self.type == "Conv2DBackpropInputSwitchedBias":
+                bias_idx = 3
+
         elif npu_block_type == NpuBlockType.Pooling:
             ifm_idx = 0
             ofm_idx = 0