winex11: Request VK_KHR_external_memory_capabilities in get_gpu_properties_from_vulkan().

dlls/winex11.drv/xrandr.c

@@ -622,6 +622,7 @@ static BOOL get_gpu_properties_from_vulkan( struct x11drv_gpu *gpu, const XRRPro
     static const char *extensions[] =
     {
         VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME,
+        VK_KHR_EXTERNAL_MEMORY_CAPABILITIES_EXTENSION_NAME,
         "VK_EXT_acquire_xlib_display",
         "VK_EXT_direct_mode_display",
     };