Make SUPPORT_MULTI_SIM recognizable in bp am: f34142e084 am: c9504aa1a6

Original change: https://android-review.googlesource.com/c/device/google/gs101/+/3115519

Change-Id: Ice689a458558bf1cfc8dbdbf4d76101d76d26a0e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>