Update cpu depthwise kernels

Resolves: COMPMID-4688

Signed-off-by: Freddie Liardet <frederick.liardet@arm.com>
Change-Id: I9e22f967f5b7ccaebff2fc49f0253f621d62d820
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/6030
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Marquez Tello <pablo.tello@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/core/NEON/kernels/arm_conv/depthwise/interleaves/8b_mla.hpp b/src/core/NEON/kernels/arm_conv/depthwise/interleaves/8b_mla.hpp
new file mode 100644
index 0000000..3176d1d
--- /dev/null
+++ b/src/core/NEON/kernels/arm_conv/depthwise/interleaves/8b_mla.hpp
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2021 Arm Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "arm_gemm.hpp"
+#include "src/core/NEON/kernels/arm_gemm/utils.hpp"
+#include "src/core/NEON/kernels/assembly/depthwise.hpp"
+#include <cstdint>
+#include <cstring>
+
+using namespace arm_gemm;
+
+size_t generic_get_packed_size(
+  const VLType vec_type,
+  const unsigned int acc_depth,
+  const unsigned int kernel_rows,
+  const unsigned int kernel_cols,
+  const unsigned int n_input_channels
+);
+
+void generic_pack(
+  const VLType vec_type,
+  const unsigned int acc_depth,
+  const unsigned int kernel_rows,
+  const unsigned int kernel_cols,
+  const unsigned int n_channels,
+  void *_outptr,
+  const void *_weights,
+  size_t ld_weight_col,
+  size_t ld_weight_row
+);
+
+#define ADD_IMPLEMENTATION(ARCH, TYPENAME, TYPE, VEC_TYPE, ACC_DEPTH, KERN_ROWS, KERN_COLS) \
+struct interleave_  ## ARCH ## _ ## TYPENAME ## _ ## KERN_ROWS ## x ## KERN_COLS ## _mla \
+{ \
+  static size_t get_packed_size(const DepthwiseArgs &args); \
+  static void pack_parameters( \
+    unsigned int n_channels, void *outptr, \
+    const TYPE *weights, size_t ld_weight_col, size_t ld_weight_row \
+  ); \
+}; \
+\
+size_t interleave_  ## ARCH ## _ ## TYPENAME ## _ ## KERN_ROWS ## x ## KERN_COLS ## _mla::get_packed_size(const DepthwiseArgs &args) \
+{ \
+  return generic_get_packed_size(VLType::VEC_TYPE, ACC_DEPTH, KERN_ROWS, KERN_COLS, args.input_channels); \
+} \
+\
+void interleave_  ## ARCH ## _ ## TYPENAME ## _ ## KERN_ROWS ## x ## KERN_COLS ## _mla::pack_parameters(unsigned int n_channels, void *outptr, \
+                            const TYPE *weights, size_t ld_weight_col, size_t ld_weight_row) \
+{ \
+  generic_pack(VLType::VEC_TYPE, ACC_DEPTH, KERN_ROWS, KERN_COLS, n_channels, outptr, weights, ld_weight_col, ld_weight_row); \
+}