m7: add kickstart service
m7: use config.xml from common overlay.

Change-Id: Ib3d1d902aee3a57dcdcf6e5bdf57c829b8bf7a36
m7: remove settings package overlay, use m7-common overlay.

Change-Id: Iaab2ea0866d38a24d29373a49d1c6185f99db408