Suppressed warnings on line breaks around binary operator

Signed-off-by: Grzegorz Latosinski <glatosinski@antmicro.com>

tox.ini

diff --git a/tox.ini b/tox.ini
index 309c667..43456c6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -26,3 +26,6 @@
 [flake8]
 exclude = .tox,*.egg,build,data
 select = E,W,F
+ignore =
+    W503, # line break before binary operator
+    W504, # line break after binary operator