Merge "libvulkan: Initialize VkSurfacePropertiesKHR::supportedCompositeAlpha" into nyc-dev
am: c9456b532d

* commit 'c9456b532d83edafc997d60b2c31d67bb77ac3f9':
  libvulkan: Initialize VkSurfacePropertiesKHR::supportedCompositeAlpha