Set apex_available property

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: cherry-pick from internal

Bug: 150999716
Test: m
Merged-In: Id68e7417f98307cbadea251f9e8a96b0697d8bec
(cherry picked from commit c83537b439f0a6b351735a26bbcb5d34af4d1dd6)
Change-Id: Id68e7417f98307cbadea251f9e8a96b0697d8bec
1 file changed