Adds TENSOR_FLOAT16 operand type.

Bug: 113563458
Test: VtsHalNeuralnetworksV1_2TargetTest --hal_service_instance=android.hardware.neuralnetworks@1.2::IDevice/sample-all
Change-Id: If12ceff428e1b1a90ef99b7353f0df60d4ef8010
Merged-In: If12ceff428e1b1a90ef99b7353f0df60d4ef8010
(cherry picked from commit 19d63453d4c2723c3fad4ce7f852f548d761278e)
2 files changed