modemloader: Add support for recent devices

 * Try to read the hardware revision from the
   bootloader before parsing /proc/cpuinfo
 * Set more properties to catch all recent device
   needs as well
 * Introduce a property to let other services (cbd)
   know they can start

Change-Id: I50d8ec37921ec2559bdd7fe852d830f10fe1c12e
1 file changed