Revert "Move device/google/atv overlays into SystemUI"

Revert "Remove device/google/atv/overlay"

Revert "Remove device/google/atv overlay from RRO exclusion"

Revert submission 1510032-atv-rro

Reason for revert: b/178396156
Reverted Changes:
If9a99f850:Move keyguard enabled to Component Override
I1b0056b50:Make device/google/atv compatible with RRO
If766a0152:Remove device/google/atv overlay from RRO exclusio...
I9df2747d9:Remove device/google/atv/overlay
If689c72c2:Move device/google/atv overlays into SystemUI

Change-Id: I13d9670e41d408e7d4d3bf7a1e1408c083642721