Add okamil@ to OWNERS for system/ directory and sort based on alphabetical...

Add okamil@ to OWNERS for system/ directory and sort based on alphabetical order am: 5b3c663d am: 5acafbf3

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/3229502



Change-Id: Ic7ed482a1d59fb973c770e5ea8f6fec46176314b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>