Re: [PATCH 6/7] winex11: Return Wine Vulkan driver functions from vkGetDeviceProcAddr().

[Roderick Colenbrander]

We should probably also return various device functions from
X11DRV_vkGetInstanceProcAddr. At least Surface / swapchain / display
extensions are kind of treated as 'Vulkan core'.

Signed-off-by: Roderick Colenbrander