Adds float16 support for FULLY_CONNECTED.

Bug: 118608023
Test: NeuralNetworksTest_static
Change-Id: I5423995a8429d8d17f4e9a7750d1ccbfb685dcff
Merged-In: I5423995a8429d8d17f4e9a7750d1ccbfb685dcff
(cherry picked from commit 0061269c922c5536bcca77adfed450237d2364e0)
13 files changed