OWNERS, DIR_METADATA: Add files

Seems that the infra is very upset if these files does not exist.
Add them.

BUG=b:242847548
TEST=none

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Change-Id: I65181fc1a4bac5cf2fa2f504f0508de0552615be
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/3836556
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Commit-Queue: Sergey Senozhatsky <senozhatsky@chromium.org>
2 files changed