FL7: Add REVERSE CPU reference implementation and functional testing

Also refined REVERSE specification.

Also updated sample shim driver prebuilts.

Test: NeuralNetworksTest_static 2 --gtest_filter=*reverse_dim*

Bug: 202280925

Merged-In: Id7be504cc86eb3a96ea7a6b138d2e94631c06844
Change-Id: Id7be504cc86eb3a96ea7a6b138d2e94631c06844
(cherry picked from commit 33cdaae7e71021ecf41083852ec4ee26f9dd7f36)
10 files changed