COMPMID-417 - Added arm_compute comment at the end of NEON header files

Change-Id: I288f409c8f51fac7ceb7b3f301105a74ffc737fd
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/88785
Reviewed-by: Moritz Pflanzer <moritz.pflanzer@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
diff --git a/arm_compute/core/NEON/kernels/NEChannelExtractKernel.h b/arm_compute/core/NEON/kernels/NEChannelExtractKernel.h
index 42df4b8..8c6977c 100644
--- a/arm_compute/core/NEON/kernels/NEChannelExtractKernel.h
+++ b/arm_compute/core/NEON/kernels/NEChannelExtractKernel.h
@@ -105,5 +105,5 @@
     ChannelExtractFunction _func;
     unsigned int           _lut_index;
 };
-}
+} // namespace arm_compute
 #endif /* __ARM_COMPUTE_NECHANNELEXTRACTKERNEL_H__ */