COMPMID-2379: Use the macros available in gemm_helpers.h in GEMMLowp OpenCL kernels

Change-Id: I09923a068bff36d42a3f2c1084ffa8bf218187b9
Signed-off-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Reviewed-on: https://review.mlplatform.org/c/1260
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/core/CL/kernels/CLGEMMLowpMatrixMultiplyReshapedKernel.h b/arm_compute/core/CL/kernels/CLGEMMLowpMatrixMultiplyReshapedKernel.h
index eaadaef..f0c8d5c 100644
--- a/arm_compute/core/CL/kernels/CLGEMMLowpMatrixMultiplyReshapedKernel.h
+++ b/arm_compute/core/CL/kernels/CLGEMMLowpMatrixMultiplyReshapedKernel.h
@@ -58,7 +58,7 @@
      *                       lhs_info.transpose: false
      * @param[in]  rhs_info  RHS matrix information used for reshaping the input1 tensor.  Only the following values are supported:
      *                       rhs_info.n0: 2,3,4,8,16
-     *                       rhs_info.k0: 2,3,4,8,16
+     *                       rhs_info.k0: same as lhs_info.k0
      *                       rhs_info.transpose: true
      * @param[in]  gemm_info GEMM information used to retrieve the original dimensions of the input matrices
      *