Revert "loader: Remove CreateDevice from loader's instance"
Revert "loader: Remove CreateDevice from loader's instance"

This reverts commit b81161d0fa45c3b1333d8954220c992c5eb8aac4.

Change did not match commit message.

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