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/L2Normalize.cpp b/tests/validation/NEON/L2Normalize.cpp
index 4f94c15..ceffa6d 100644
--- a/tests/validation/NEON/L2Normalize.cpp
+++ b/tests/validation/NEON/L2Normalize.cpp
@@ -43,7 +43,7 @@
 namespace
 {
 /** Tolerance for float operations */
-constexpr RelativeTolerance tolerance_f32(0.00001f);
+RelativeTolerance<float> tolerance_f32(0.00001f);
 } // namespace
 
 TEST_SUITE(NEON)