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

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

Change-Id: I6e7c30f7d4146ee300e7b7ba3cb6641dbdcd0c63
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>