AIDL: Implement QoS SCS policy stub APIs am: c450e7b5d8

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/wpa_supplicant_8/+/22650217

Change-Id: I8682d32e91b804acae8acb75cf98c50c6d765855
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>