tests: Update licence headers

Signed-off-by: Nikolai Artemiev <nartemiev@google.com>
Change-Id: Ia964279ace569b4b93f4e2919c1c228a9b621745
Reviewed-on: https://review.coreboot.org/c/flashrom/+/45438
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
7 files changed