Merge "vulkan: fix double dlopen for layer libraries" into nyc-dev am: 79994146e1
am: 0e92ae1333

* commit '0e92ae13336119ef986ee7659b81c1d66c3741cf':
  vulkan: fix double dlopen for layer libraries

Change-Id: Icb8992324855d2a48f86f90ba1fdbaa8b686147a