s4-common: Add releasetools for assertions

* Needed to check bootloader version assertion

Change-Id: I86cf2ed0905e0a39f7db00c574efbcad7c4e869b
s4-common: update post-boot script

* Updated to CAF jb_2.5 version in device/qcom/common
* Set interactive governor permissions

Change-Id: Ic49069b65dbb806fdd15e81108bb6234e214ab5b