Added TENSOR_QUANT8_SYMM type.

Test: none
Change-Id: I02fc8698b3f80e1ae2a318e5cde593c6d7222bac
Merged-In: I02fc8698b3f80e1ae2a318e5cde593c6d7222bac
(cherry picked from commit bae91697b5397693a10f225de3d39102152e4f18)
2 files changed