layers: Check if CreateDevice enabling WSI device extension, not instance
layers: Check if CreateDevice enabling WSI device extension, not instance

Some of the layers were checking whether VK_EXT_KHR_SWAPCHAIN_EXTENSION_NAME
(the WSI instance extension) is in the list of device extensions being enabled.
This is wrong.  They should be checking whether
VK_EXT_KHR_DEVICE_SWAPCHAIN_EXTENSION_NAME (the WSI device extension) is in the
list of device extensions being enabled.

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools