[Deps] update Brevitas, add onnxoptimizer to reqs

docker/finn_entrypoint.sh

@@ -14,7 +14,7 @@ gecho () {
 # the repos themselves are cloned in the Dockerfile
 FINN_BASE_COMMIT=ac0b86a63eb937b869bfa453a996a8a8b8506546
 FINN_EXP_COMMIT=e9f97dcdb4db2f889b0f36af079a6a1792b7d4de
-BREVITAS_COMMIT=14abbe1e7ef82485d79415871fcf5766b0a40a00
+BREVITAS_COMMIT=32c63e65c9cac381e51fab6497f595c2768e5607
 CNPY_COMMIT=4e8810b1a8637695171ed346ce68f6984e585ef4
 HLSLIB_COMMIT=4d74baefa79df48b5a0348d63f39a26df075de51
 PYVERILATOR_COMMIT=e2ff74030de3992dcac54bf1b6aad2915946e8cb

requirements.txt

@@ -6,6 +6,7 @@ future==0.18.2
 gspread==3.6.0
 numpy==1.18.0
 onnx==1.7.0
+onnxoptimizer==0.2.6
 onnxruntime==1.4.0
 pre-commit==2.6.0
 scipy==1.5.2