libdrm/arc-libdrm: add OWNERS

BUG=b:208716265
TEST=None

Cq-Depend: chromium:3492969
Change-Id: I9ea3fae4e64c33d57fd70567f5c0c0ee582497df
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/3495847
Tested-by: Ilja Friedel <ihf@chromium.org>
Auto-Submit: Ilja Friedel <ihf@chromium.org>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Commit-Queue: Rob Clark <robdclark@chromium.org>
2 files changed