[automerger skipped] audio: Update ChildInterface to set scheduler policy lazily am: 2e3b3e4c17 -s ours

am skip reason: Merged-In I31f9dd832c7f85f9632d1d389a8b1063d237d4c1 with SHA-1 780fefb331 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/24287966

Change-Id: I540e7923f2811d2274adb159b95a590b54afa574
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>