vulkan: Handle vkGet/SetPrivateDataEXT on Android swapchains

There is an annoying spec corner on Android.  Because VkSwapchain is
implemented in the Vulkan loader on Android which may not know about
this extension, we have to handle it as a special case inside the
driver.  We only have to do this on Android and only for VkSwapchainKHR.

Acked-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4882>
2 files changed