COMPMID-3826 ArmNN Nightly failing for CL

Change-Id: I09f557b5cecafc669e12764e8592457212168d62
Signed-off-by: Giorgio Arena <giorgio.arena@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4131
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/core/CL/cl_kernels/activation_layer.cl b/src/core/CL/cl_kernels/activation_layer.cl
index fca4e85..174b753 100644
--- a/src/core/CL/cl_kernels/activation_layer.cl
+++ b/src/core/CL/cl_kernels/activation_layer.cl
@@ -76,7 +76,7 @@
     TYPE data0 = VLOAD(VEC_SIZE)(0, (__global DATA_TYPE *)input_addr);
 
     // Perform activation
-    data0 = ACTIVATION(ACT, DATA_TYPE, data0, A_VAL, B_VAL);
+    data0 = ACTIVATION(ACT, DATA_TYPE, VEC_SIZE, data0, A_VAL, B_VAL);
 
     // Store result
     STORE_VECTOR_SELECT(data, DATA_TYPE, output_addr, VEC_SIZE, VEC_SIZE_LEFTOVER, VEC_SIZE_LEFTOVER != 0 && get_global_id(0) == 0)