libhwc2.1: enter ns mode after boot when smooth display off am: 237752a978 am: 48c94a6ec6

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/google/graphics/zuma/+/23918193

Change-Id: I997e6e8da4b4c54c275cdffd3d23e0a9ceb5f679
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>