Hello,
I'm not using Device Initialization, but using the Init component in combination with the FSL USB Stack 4.0.3.
This might be a starting point for you.
How this looks like is described in Tutorial: USB CDC with the KL25Z Freedom Board | MCU on Eclipse
It supports right now KL25Z, ColdFire JM16/JM60/JM128/52259
Examples and the Processor Expert component code can be found on GitHub:
mcuoneclipse/Examples at master · GitHub
Hope this helps.