message: Change present info pNext RDC warn and assert
  Add VK_STRUCTURE_TYPE_PRESENT_FRAME_TOKEN_GGP as a pNext to
  ignore for VkPresentInfoKHR
  Remove RDCASSERT for pPresentInfo->pNext to be null, since it
  can be not null, and there is a loop above the assert that checks
  the pNext term.
diff: @@ -653,6 +653,7 @@ VkResult WrappedVulkan::vkQueuePresentKHR(VkQueue queue, const VkPresentInfoKHR
  // allowed (and ignored) pNext structs
  if(next->sType != VK_STRUCTURE_TYPE_DISPLAY_PRESENT_INFO_KHR &&
  next->sType != VK_STRUCTURE_TYPE_DEVICE_GROUP_PRESENT_INFO_KHR &&
  + next->sType != VK_STRUCTURE_TYPE_PRESENT_FRAME_TOKEN_GGP &&
  next->sType != VK_STRUCTURE_TYPE_PRESENT_REGIONS_KHR)
  {
  RDCWARN("Unsupported pNext structure in pPresentInfo: %s", ToStr(next->sType).c_str());
  @@ -660,7 +661,6 @@ VkResult WrappedVulkan::vkQueuePresentKHR(VkQueue queue, const VkPresentInfoKHR
  next = next->pNext;
  }
  - RDCASSERT(pPresentInfo->pNext == NULL);
  // TODO support multiple swapchains here
  VkResourceRecord *swaprecord = GetRecord(pPresentInfo->pSwapchains[0]);
  