Point directly to generated c sysprop_library am: 63ef60ff4e

Original change: https://android-review.googlesource.com/c/platform/system/hardware/interfaces/+/2120072

Change-Id: If39398c3aecfc5557e149b28ae05508f830da7c5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>