Add compat changes for uid_time_in_state.

Commit: 4dc88795 changed the label of
uid_time_in_state from proc to proc_uid_time_in_state.  This file
could have been used by vendor services.  Add a compat mapping.

Bug: 62573845
Test: None. Prebuilt change only.
Change-Id: I2e5222c4d4fe12cb0bbc4e85ba53c1f59b714d61