Use soong_config_set instead of raw variables am: cc6d580152

Original change: https://android-review.googlesource.com/c/device/google/gs101/+/2184488

Change-Id: I3ee3b6a711b6bacbe35d7ff52684a8ea1939a9b4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>