Update license boilerplate text in source code files

Normally we don't do this, but enough changes have accumulated that
we're doing a tree-wide one-off update of the name & style.

BUG=chromium:1098010
TEST=`repo upload` works

Change-Id: Ibac384da9e20ee0153aed31d93e5c0a3b6b54a63
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/rootdev/+/5545825
Auto-Submit: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Alexis Savery <asavery@chromium.org>
Commit-Queue: Alexis Savery <asavery@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
6 files changed