DO NOT MERGE: drm_hwcomposer: Introduce Planner interface
am: d9c3e2d9c8

* commit 'd9c3e2d9c8b15082b1ef2372406ba46e4bb7d199':
  DO NOT MERGE: drm_hwcomposer: Introduce Planner interface

Change-Id: Ib540305069398638db10a6fc3a4db41d8a36096f