To make the generic_x86_arm bootable.
Third party translabor binary can be added on the resulting
system.img and be tested at least on emulator.
BUG: 117673798
Change-Id: Iffbcf9217bbedc12ba83a4851e84ecbf299bf8e7
Merged-In: Iffbcf9217bbedc12ba83a4851e84ecbf299bf8e7
bohu