Add python pre-commit script checkers

Fix up issues in existing python scripts.

Signed-off-by: Jeremy Johnson <jeremy.johnson@arm.com>
Change-Id: Id4adab404560c3129c66f31c21ff0ce148283c73
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..4a73a48
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,20 @@
+# Copyright (c) 2021-2022 Arm Limited.
+# SPDX-License-Identifier: Apache-2.0
+
+# See https://pre-commit.com for more information
+# See https://pre-commit.com/hooks.html for more hooks
+repos:
+-   repo: https://github.com/asottile/reorder_python_imports
+    rev: v2.2.0
+    hooks:
+    -   id: reorder-python-imports
+
+-   repo: https://github.com/psf/black
+    rev: 20.8b1
+    hooks:
+    -   id: black
+
+-   repo: https://gitlab.com/pycqa/flake8
+    rev: 3.7.9
+    hooks:
+    -   id: flake8