Add SPDX license headers to README.md & CONTRIBUTING.md files under root repo folders

Updates shell scripts under the utils/ directory to include proper SPDX
license identifiers and copyright:

  SPDX-License-Identifier: BSD-3-Clause-Clear

These changes support automation tools like repolinter and align with open
source best practices.
Signed-off-by: smuppand <[email protected]>

Author: smuppand

CONTRIBUTING.md

@@ -1,3 +1,6 @@
+# Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+# SPDX-License-Identifier: BSD-3-Clause-Clear
+
 # Contributing to the Shell Scripts Repository
 
 Welcome! This repository contains hardware validation shell scripts for Qualcomm embedded robotic platform boards running Linux systems. These scripts follow POSIX standards for maximum portability and integration into CI tools like LAVA.

README.md

@@ -1,3 +1,6 @@
+# Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+# SPDX-License-Identifier: BSD-3-Clause-Clear
+
 # Linux Feature Validation Framework
 
 ## Overview