No swapchain_image_type for xcb
No swapchain_image_type for xcb

google/vulkan-cpp-library,gardell/vulkan-cpp-library,gardell/vulkan-cpp-library,google/vulkan-cpp-library,aonorin/vulkan-cpp-library,aonorin/vulkan-cpp-library,google/vulkan-cpp-library,aonorin/vulkan-cpp-library