tree 7e4e3851e3d21287b55af12ec993e7fbf5aba456
parent 01d85eeab09356f77ac103cf7c108f5be0799bad
author Arun Kumar K.R <akumarkr@codeaurora.org> 1418960200 -0800
committer Gerrit - the friendly Code Review server <code-review@localhost> 1420581045 -0800

hwc: Add support for perf display hint

- Set the perf hint when there is only one updating layer, which helps
  in reducing cpu params and thus reduce power.
- This feature is enabled with the property persist.mdpcomp_perfhint,
  which is set to a positive value, which will be the window of frames
  before the perf hint is set

CRs-fixed: 765460
Change-Id: Ie21e1cd201afab16bedd3c750ea3b0230769969a