Add janitors to the OWNERS file am: c9dceb0985

Original change: https://android-review.googlesource.com/c/platform/external/libva-utils/+/3423595

Change-Id: I737096dfbc8dc0f43748ab1588d23d12746ed124
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>