device-common: Do not strip signed GKI modules am: 43bc0091db

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/2422895

Change-Id: Ib6545155e11feb56538f50dd6321afed55b47461
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>