VkPhysicalDeviceVulkan12Properties was added to the core spec by Vulkan
1.2. It allows users to query the following properties simultaneously:
    * VkPhysicalDeviceDriverProperties
    * VkPhysicalDeviceFloatControlsProperties
    * VkPhysicalDeviceDescriptorIndexingProperties
    * VkPhysicalDeviceDepthStencilResolveProperties
    * VkPhysicalDeviceSamplerFilterMinmaxProperties
    * VkPhysicalDeviceTimelineSemaphoreProperties
    * and framebufferIntegerColorSampleCounts

All these structs are a part of the core spec and must be supported.

Bug: b/176498010
Change-Id: I82b06f219d2ee091139964ee8b19f05e1c64e3a8
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/51408
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Sean Risser <srisser@google.com>
Commit-Queue: Sean Risser <srisser@google.com>