misc: Run pre-commit run --all-files

This is reflect the updates made to black when running `pre-commit
autoupdate`.

Change-Id: Ifb7fea117f354c7f02f26926a5afdf7d67bc5919

src/mem/AddrMapper.py

@@ -36,6 +36,7 @@
 from m5.params import *
 from m5.SimObject import SimObject
 
+
 # An address mapper changes the packet addresses in going from the
 # response port side of the mapper to the request port side. When the
 # response port is queried for the address ranges, it also performs the