layers: Change size of X8_D24_UNORM_PACK32
layers: Change size of X8_D24_UNORM_PACK32

Change-Id: If049e2afaea83f0a705a7031888d4278784be49d

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