COMPMID-516 Change the CL CNN validation functions to use relative
tolerance error

Change-Id: Iec6347af26ea2a83c911f5fe10e6048e8a2a47ba
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/85381
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Moritz Pflanzer <moritz.pflanzer@arm.com>
diff --git a/tests/validation/NEON/MeanStdDev.cpp b/tests/validation/NEON/MeanStdDev.cpp
index 42d8879..44f7178 100644
--- a/tests/validation/NEON/MeanStdDev.cpp
+++ b/tests/validation/NEON/MeanStdDev.cpp
@@ -37,8 +37,8 @@
 {
 namespace
 {
-constexpr RelativeTolerance tolerance_rel_high_error(0.05f);
-constexpr RelativeTolerance tolerance_rel_low_error(0.0005f);
+RelativeTolerance<float> tolerance_rel_high_error(0.05f);
+RelativeTolerance<float> tolerance_rel_low_error(0.0005f);
 } // namespace
 
 TEST_SUITE(NEON)