python: Apply Black formatter to Python files

The command executed was `black src configs tests util`.

Change-Id: I8dfaa6ab04658fea37618127d6ac19270028d771
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/47024
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/sst/OutgoingRequestBridge.py

@@ -27,13 +27,13 @@
 from m5.params import *
 from m5.SimObject import SimObject
 
+
 class OutgoingRequestBridge(SimObject):
-    type = 'OutgoingRequestBridge'
+    type = "OutgoingRequestBridge"
     cxx_header = "sst/outgoing_request_bridge.hh"
-    cxx_class = 'gem5::OutgoingRequestBridge'
+    cxx_class = "gem5::OutgoingRequestBridge"
 
     port = ResponsePort("Response Port")
     physical_address_ranges = VectorParam.AddrRange(
-        [AddrRange(0x80000000, MaxAddr)],
-        "Physical address ranges."
+        [AddrRange(0x80000000, MaxAddr)], "Physical address ranges."
     )