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: Ic807f6dd0ec2632f057931b877ac5d7902f8cabd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>