vkCmdBlitImage/vkCopyBufferToImage/vkCmdCopyImage/vkCmdCopyImageToBuffer should validate VK_IMAGE_USAGE_TRANSFER bits and not VK_BUFFER_USAGE_TRANSFER bits

[mathiasschott]

This works coincidentally since they have the same enum values.

https://github.com/KhronosGroup/Vulkan-LoaderAndValidationLayers/blob/master/layers/core_validation.cpp#L7407
https://github.com/KhronosGroup/Vulkan-LoaderAndValidationLayers/blob/master/layers/core_validation.cpp#L7409

https://github.com/KhronosGroup/Vulkan-LoaderAndValidationLayers/blob/master/layers/core_validation.cpp#L7453

https://github.com/KhronosGroup/Vulkan-LoaderAndValidationLayers/blob/master/layers/core_validation.cpp#L7495

https://github.com/KhronosGroup/Vulkan-LoaderAndValidationLayers/blob/master/layers/core_validation.cpp#L7536