Rename quantized data types to remove ambiguity for signed/unsigned payloads

!android-nn-driver:2572

Change-Id: I8fe52ceb09987b3d05c539409510f535165455cc
Signed-off-by: Derek Lamberti <derek.lamberti@arm.com>
diff --git a/src/backends/backendsCommon/test/WorkloadTestUtils.hpp b/src/backends/backendsCommon/test/WorkloadTestUtils.hpp
index 552eab2..0b0f265 100644
--- a/src/backends/backendsCommon/test/WorkloadTestUtils.hpp
+++ b/src/backends/backendsCommon/test/WorkloadTestUtils.hpp
@@ -98,9 +98,9 @@
         case armnn::DataType::Float16:
         case armnn::DataType::Float32:
             return weightsType;
-        case armnn::DataType::QuantisedAsymm8:
+        case armnn::DataType::QAsymmU8:
             return armnn::DataType::Signed32;
-        case armnn::DataType::QuantisedSymm16:
+        case armnn::DataType::QSymmS16:
             return armnn::DataType::Signed32;
         default:
             BOOST_ASSERT_MSG(false, "GetBiasTypeFromWeightsType(): Unsupported data type.");