Merge remote-tracking branch 'origin/prism_dev'

* origin/prism_dev:
  Add vendor/google/prism
  Add toolchains/kvm.

Change-Id: Ic9d557f456d51fd1c891caf291637ba402e36a47
tree: 7b588646694031d49c68a3c3b224aaa8b6d19fce
  1. default.xml