am fbb4a5ac: am fba6c12a: Merge "graphics.h: add new Y8, Y16 formats" into jb-mr1-aah-dev

# Via Android (Google) Code Review (1) and others
* commit 'fbb4a5ac1b771b2df0786bb5587c7ed0d5f82089':
  graphics.h: add new Y8, Y16 formats