loader: Modify loader_make_version
loader: Modify loader_make_version

Modified loader_make_version to match the way we calculate the
version in other places.

Change-Id: Ia15e71fcfc0690836ed8ce1a3e9b6911988b57ff

KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers