DO NOT MERGE: drm_hwcomposer: Introduce Planner interface
am: d9c3e2d9c8  -s ours

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

Change-Id: I50696960694fb94394c370624f2b4ebc65af93f9