Fix name of FREEDOM-KL25Z demo Eclipse project.
Set KL25Z demo Eclipse ChibiOS root path.

It is set in Eclipse Project Properties | Resource | Linked Resources |
Path Variables tab, named CHIBIOS and points to ../.. relative to the
project itself.
Merge pull request #2 from cdbennett/FREEDOM-KL25Z_Demo_Eclipse_project

Fix Eclipse project file for FREEDOM-KL25Z Eclipse demo