Update reinterpret tensor as 1D for CPU add

* Use the same implementation as other layers.

Resolves: COMPMID-5108
Signed-off-by: Viet-Hoa Do <viet-hoa.do@arm.com>
Change-Id: I5a50259b398b71ca1f61b5ee8daa539bf8263fac
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/8501
Benchmark: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gunes Bayir <gunes.bayir@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/cpu/operators/CpuAdd.cpp b/src/cpu/operators/CpuAdd.cpp
index 828361e..41def8e 100644
--- a/src/cpu/operators/CpuAdd.cpp
+++ b/src/cpu/operators/CpuAdd.cpp
@@ -50,14 +50,9 @@
 
 void CpuAdd::run(ITensorPack &tensors)
 {
-    if(static_cast<kernels::CpuAddKernel *>(_kernel.get())->get_can_interpret_inputs_as_1d_array())
-    {
-        NEScheduler::get().schedule_op(_kernel.get(), Window::DimX, _kernel->window(), tensors);
-    }
-    else
-    {
-        ICpuOperator::run(tensors);
-    }
+    const auto split_dimension = static_cast<kernels::CpuAddKernel *>(_kernel.get())->get_split_dimension();
+
+    NEScheduler::get().schedule_op(_kernel.get(), split_dimension, _kernel->window(), tensors);
 }
 } // namespace cpu
 } // namespace arm_compute