Update assembly code

This patch brings performance uplift on Cortex-A35.

Resolves: COMPMID-4316

Change-Id: I2b9c02a599373f780dd1b981b821e33bd59a3422
Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5461
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/Android.bp b/Android.bp
index 8e4d9fe..f542b20 100644
--- a/Android.bp
+++ b/Android.bp
@@ -762,6 +762,7 @@
                 "src/core/NEON/kernels/arm_gemm/kernels/a64_sgemm_8x12/a55r1.cpp",
                 "src/core/NEON/kernels/arm_gemm/kernels/a64_sgemm_8x12/generic.cpp",
                 "src/core/NEON/kernels/arm_gemm/kernels/a64_sgemm_8x12/x1.cpp",
+                "src/core/NEON/kernels/arm_gemm/kernels/a64_sgemm_8x6/generic.cpp",
                 "src/core/NEON/kernels/arm_gemm/kernels/a64_sgemv_pretransposed/generic.cpp",
                 "src/core/NEON/kernels/arm_gemm/kernels/a64_smallK_hybrid_fp32_mla_6x4/generic.cpp",
                 "src/core/NEON/kernels/arm_gemm/kernels/a64_smallK_hybrid_fp32_mla_8x4/generic.cpp",