The marked library(ies) were available to the APEXes via the
hand-written whitelist in build/soong/apex/apex.go. Trying to remove the
whitelist by adding apex_available property to the Android.bp of the
libraries.

Exempt-From-Owner-Approval: already approved in rvc-dev

Bug: 150999716
Test: m
Change-Id: I5a6070ad03768575c9b5980b3e03ddc3d222e119