Update GEMM assembly kernels

- Introduce Fp32 kernels with internal calculations in Bfloat16 when
fast_mode is enabled
- Improve kernel selection heuristics

Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: I68a9e7e862b6fd2721b46e0d7cc791091c4ab279
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5965
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/core/NEON/kernels/arm_gemm/mergeresults-sve.cpp b/src/core/NEON/kernels/arm_gemm/mergeresults-sve.cpp
index 77d86b7..a4124c4 100644
--- a/src/core/NEON/kernels/arm_gemm/mergeresults-sve.cpp
+++ b/src/core/NEON/kernels/arm_gemm/mergeresults-sve.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021 Arm Limited.
+ * Copyright (c) 2017-2021 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -38,4 +38,4 @@
 
 #include "merges/list-sve.hpp"
 
-} // namespace arm_gemm
\ No newline at end of file
+} // namespace arm_gemm