COMPMID-421: Added FP16 suppot to NENormalizationLayer and NEPixelWiseMultiplication.

Change-Id: If174f8071502fc5cc94b27cd44a9b1d5e451a9e2
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/79553
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
12 files changed