libhwc2.1: get active operation rate from kerenl when power on am: c8122475f8 am: e08d412560 am: a1f6318616

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/google/graphics/zuma/+/23659932

Change-Id: Ieb2b237c3ed46e576207463e535dc0c67f73f5da
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>