Add TENSOR_QUANT8_ASYMM_SIGNED support to ADD, MUL and SUB.

Bug: 143934463
Bug: 143934627
Bug: 143935040
Test: NNTest_static and 1.3 VTS
Change-Id: I47ffc2c264390f3c6b98aa9567fb47f2c58333fe
Merged-In: I47ffc2c264390f3c6b98aa9567fb47f2c58333fe
(cherry picked from commit 122bc2c0cc36f46b9d82bafde69b3881faaa71c0)
2 files changed