bundle_firmware: fix Pylint errors

A comment only change to make 'repo upload' happy with this file.

BUG=none
TEST=none

Change-Id: I2a42313a9b0492a196349028ccb056c019660778
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/198545
Reviewed-by: Simon Glass <sjg@chromium.org>
1 file changed