bitstream: Update headers

BUG=none
TEST=presubmit passes

Change-Id: I8332a6aff5c75504348a0b4a5c5865c52b22a324
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/drm-tests/+/4230132
Commit-Queue: Fritz Koenig <frkoenig@chromium.org>
Tested-by: Fritz Koenig <frkoenig@chromium.org>
Reviewed-by: Nathan Hebert <nhebert@chromium.org>
17 files changed