resolve merge conflicts of 9c41490ca7 to nyc-dev-plus-aosp

Change-Id: I5638606f8c59d33898efa184e349a2f818381c4d
tree: d3f2f3205df370a76c8cc1c7ccf75bd25b5f43de
  1. Android.mk
  2. bootimg.h
  3. mkbootimg