Revert "Remove performance profiles crap"

This reverts commit 690f86661b84099e69481e9d2d1202bb3eb0f5ff.
Revert "m8: Remove post_boot script, add performance profiles"

This reverts commit db822bf8297ccaaa6738fb9b4fa69d661f700ffe.

Conflicts:
	rootdir/etc/init.qcom.rc