IVGCVSW-3399 Add support of QuantisedSymm16 to Permute and unit tests

Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Change-Id: Id6ab073ae3e0ff5f60c2f4bef975798ce71c9f88
diff --git a/src/backends/reference/workloads/RefPermuteWorkload.cpp b/src/backends/reference/workloads/RefPermuteWorkload.cpp
index c943eb8..4d43b7e 100644
--- a/src/backends/reference/workloads/RefPermuteWorkload.cpp
+++ b/src/backends/reference/workloads/RefPermuteWorkload.cpp
@@ -30,5 +30,6 @@
 template class RefPermuteWorkload<DataType::Float16>;
 template class RefPermuteWorkload<DataType::Float32>;
 template class RefPermuteWorkload<DataType::QuantisedAsymm8>;
+template class RefPermuteWorkload<DataType::QuantisedSymm16>;
 
 } //namespace armnn