cmhw: Add AdaptiveBacklight support

Change-Id: I3406700fb51f3462fa3e0c7cb92344b79424f7ef
Clean up boot image generation

* Remove duplicate DTB generation step.
* Don't do unnecessary DTB concatenation step.

Change-Id: Ie2028b15a79b03fbd423107e8fb91e3e45a1998e
Merge pull request #17 from CyanogenMod/cm-11.0

update