Explicitly enable greylist for classloader-namespaces

The linker no longer enables greylist by default, it
needs to be explicitly enabled by specifying corresponding
flag.

Bug: https://issuetracker.google.com/38146125
Test: builds
Change-Id: Ib593f2d9a35dbadffb436f5fbc9a2a7a8f64ada0
(cherry picked from commit 058b2ea8c52ed8ce33442eda3a39e49ecd11e6dd)
2 files changed