hammerhead: produce a bootimage
hammerhead: produce a bootimage

Change-Id: Ia864869a9ab08ed25e474c7b2d594ea5276a2d5c

maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead