External memory extension changes.

Remove VK_KHR_EXTERNAL_MEMORY_FD_EXTENSION_NAME; conformance testing
fails and we don't need it.

Add VK_KHR_EXTERNAL_MEMORY_FUCHSIA_EXTENSION_NAME support in

vkGetPhysicalDeviceExternalBufferPropertiesKHR
vkGetPhysicalDeviceImageFormatProperties2KHR

Change-Id: Idcc8866e36ef19c8aee4d4d71c7cede183e5705d
2 files changed