Merge "libvulkan: Support R5G6B5_UNORM_PACK16 as a swapchain format" into nyc-dev
am: 3d92c53d99

* commit '3d92c53d99866ddd28c9ff20f610074c82f70d43':
  libvulkan: Support R5G6B5_UNORM_PACK16 as a swapchain format