Update Copyright Headers in Missed Files (#525)

This PR addresses the missing copyright headers in several source files
that were previously overlooked.

### Changes include:

- Added standard copyright notice to all applicable files
- Ensured consistency in formatting and placement of headers
- Verified that no functional code changes were introduced

### Files Updated:
- `QEfficient/transformers/models/gemma3/modeling_gemma3.py`
-  `docs/conf.py`

Signed-off-by: Abukhoyer Shaik <abukhoye@qti.qualcomm.com>

Author: abukhoy

QEfficient/transformers/models/gemma3/modeling_gemma3.py

@@ -1,6 +1,6 @@
 # -----------------------------------------------------------------------------
 #
-# Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved.
+# Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
 # SPDX-License-Identifier: BSD-3-Clause
 #
 # -----------------------------------------------------------------------------

docs/conf.py

@@ -26,7 +26,7 @@
 # -- Project information -----------------------------------------------------
 
 project = "efficient-transformers"
-copyright = "2024, Qualcomm"
+copyright = "2025, Qualcomm"
 
 # The full version, including alpha/beta/rc tags
 release = "main"