libz provides stubs to Mainline modules.

libz is an NDK library having stable APIs. Mainline modules don't need
to have copies of it. With this change, they use libz from /system/lib.

Bug: 155456180
Test: m
Change-Id: If51a7e80f4aed7495cb49f5ceb54fd2b4af0f7d2
1 file changed