Add explicit dependency from core-oj to hiddenapi annotations

Previously, the dependency was implicit by name. This change makes it
explicit.

The core-oj-hiddenapi is renamed to prevent the implicit dependency
being discovered. A follow up change will remove that capability from
Soong.

Test: m droid
      Verified that hiddenapi files (both aggregated ones and for the
      individual modules) are not affected by this change.
Change-Id: I731bb22cf21d837df6c7e00c58a1750199d03685
1 file changed