Fix dump-oat-boot to work with new build location by supplying explict host-prefix
Fix dump-oat-boot to work with new build location by supplying explict host-prefix

Change-Id: I6b44dbae63dc8fbc26473da5ee1649d725e44d57

treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst