Merge "ART: Add Makefile target for boot image" am: 336dd6a
am: 81ec19f

* commit '81ec19ff5760fbf14e0b362e8e420b63104901e6':
  ART: Add Makefile target for boot image

Change-Id: I0e591df7e79305b24e57e72bc3cc13d820fe4ab2