s4-common: Remove post-boot script

* Bring post-boot script items into main init script

*Modified for 3-stage thermal controls for EOS
Change-Id: I40ed44019c9098fd9b2da5da6e18e0fe91145e16

Conflicts:
	configs/init.qcom.post_boot.sh
	rootdir/etc/init.qcom.rc
s4-common: Switch to ondemand governor

Change-Id: Id1cfb855dd2183140e33112d09e68cd0a6dc3b13