msm8226-common: Clean up init

* Consolidate init scripts
* Remove unused init items
* Create firmware symlinks at compile time
* Reorganize services, property triggers

Change-Id: If6417a7607afe2fac69d5287bdf682f6df9dd106

Conflicts:
	rootdir/etc/init.qcom.rc
	rootdir/etc/init.target.rc

Conflicts:
	rootdir/etc/init.qcom.rc