Add guarding for accumulation validation test in aarch32

Partially Resolves: ONCPUML-1442

Signed-off-by: Radu Salavat <radu.salavat@arm.com>
Change-Id: I681df5e9c399996fbc7dc362b906af151588ca44
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/11416
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gunes Bayir <gunes.bayir@arm.com>
diff --git a/tests/validation/NEON/GEMMLowp.cpp b/tests/validation/NEON/GEMMLowp.cpp
index 8497dd1..514d156 100644
--- a/tests/validation/NEON/GEMMLowp.cpp
+++ b/tests/validation/NEON/GEMMLowp.cpp
@@ -87,7 +87,8 @@
     validate(b.info()->padding(), PaddingSize());
     validate(c.info()->padding(), PaddingSize());
 }
-
+// accumulation is not supported for Int8/UInt8 in aarch32
+#ifdef __aarch64__
 DATA_TEST_CASE(ValidateAccumulate, framework::DatasetMode::ALL, combine(
                                                                     zip(
                                                                      make("In0",{ TensorShape(21U, 1U) }),
@@ -125,6 +126,7 @@
 
     ARM_COMPUTE_EXPECT((expected ==  bool(status)), framework::LogLevel::ERRORS);
 }
+#endif // __arch64__
 
 // *INDENT-OFF*
 // clang-format off