Kickstart: launch kickstart by ks_checker

The service ks_checker will perform the following things now:
  1. Stop kickstart before checking environment.
  2. Change permission of EFS related partitions by resolving symbolic link in runtime.
  3. Launch kickstart if ro.boot.baseband is mdm.
  4. Initialize RmNet driver.
  5. Remove out-dated ueventd permission configurations.

Change-Id: Ib09d0df5e37b879c1fb4390b8e5b81f5afec0881
3 files changed