COMPMID-1857: Updated script to add copyright headers

Change-Id: Id52f92249d55ad0212fa77e37a47a95192e477ac
Reviewed-on: https://review.mlplatform.org/422
Reviewed-by: Isabella Gottardi <isabella.gottardi@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
3 files changed