Add ELU and HARD_SWISH

Bug: 147482068
Bug: 147481241
Test: NNTest_static and VtsHalNeuralnetworksV1_3TargetTest
Change-Id: Iab8da2a666ad9775dfb53d9297e94962fb651353
Merged-In: Iab8da2a666ad9775dfb53d9297e94962fb651353
(cherry picked from commit aee67f83f9e97e060ff31e16e6898a15f4680d04)
2 files changed