Update CPU kernel implementations and guard directives

Resolves COMPMID-6023

Change-Id: I868975d14c4f98af6716726feda22405a6a4c891
Signed-off-by: Michael Tyler <michael.tyler@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/9686
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Viet-Hoa Do <viet-hoa.do@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>
diff --git a/BUILD.bazel b/BUILD.bazel
index f897a1a..582a979 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -352,6 +352,7 @@
             }),
     includes = [
         "arm_compute/runtime",
+        "src/core/NEON/kernels/arm_gemm",
         "src/core/NEON/kernels/assembly",
         "src/core/NEON/kernels/convolution/common",
         "src/core/NEON/kernels/convolution/winograd",