Add Vulkan Headers repo

We must pull in the Vulkan headers separately due to
upstream repo split.

Change-Id: I83cf0c0c0eedf6384c477b4b9c16c53b46f3e185
1 file changed
tree: 0ca869fbfae70513fb3bf064418dccae6bddf0af
  1. GLOBAL-PREUPLOAD.cfg
  2. default.xml