Add post ops to ClGemmMatrixMultiplyReshapedOnlyRHSKernel and ClGemmMatrixMultiplyNativeKernel Part 3

Partially resolves: COMPMID-4435

Change-Id: Ifc5affa3a24a70942ca2d001380205df09b03ad7
Signed-off-by: SiCongLi <sicong.li@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/6550
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/gpu/cl/kernels/ClGemmMatrixMultiplyNativeKernel.h b/src/gpu/cl/kernels/ClGemmMatrixMultiplyNativeKernel.h
index 89837cc..415eb7b 100644
--- a/src/gpu/cl/kernels/ClGemmMatrixMultiplyNativeKernel.h
+++ b/src/gpu/cl/kernels/ClGemmMatrixMultiplyNativeKernel.h
@@ -76,11 +76,12 @@
     void run_op(ITensorPack &tensors, const Window &window, cl::CommandQueue &queue) override;
 
 private:
-    bool _slide_matrix_b{ true };
-    bool _reinterpret_input_as_3d{ false };
-    bool _reinterpret_output_as_3d{ false };
-    bool _use_dummy_work_items{ false };
-    bool _add_bias{ false };
+    bool         _slide_matrix_b{ true };
+    bool         _reinterpret_input_as_3d{ false };
+    bool         _reinterpret_output_as_3d{ false };
+    bool         _use_dummy_work_items{ false };
+    bool         _add_bias{ false };
+    unsigned int _num_post_op_args{ 0 }; // (EXPERIMENTAL_POST_OPS) total number of post op arguments
 };
 } // namespace kernels
 } // namespace opencl