am a2df7ab5: Fix (again) description of our interchange YV12 format

Merge commit 'a2df7ab5fe89fda56606f8151659db47e160a5b3' into gingerbread-plus-aosp

* commit 'a2df7ab5fe89fda56606f8151659db47e160a5b3':
  Fix (again) description of our interchange YV12 format