Move some binder stub methods back to max-sdk-o list.

These APIs were (presumably accidentally) moved to the greylist in
commit 80e6ac7d. They have been present in both hiddenapi-greylist.txt
and hiddenapi-greylist-max-o.txt since then.

We should not make greylist APIs less restrictive between letter
releases as this makes the situation confusing for developers.

Test: m
Bug: 123987101
Change-Id: I630f934f2bb8c389b6de7cefcffe7d8c692e3f7e