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    1. Boot complete, and property service load persist properties from
       file, then start service "kickstart" when set property
       "persist.radio.kickstart" to "on".

    2. Later, the same in group "core", ks_checker first disables
       kickstart, checking the ralated files, and restart kickstart.

With above procedure, kicstart might be terminated during firmware
downloaded stage, and it will cause modem booting failed. In this
change, we don't launch kickstart just after booted and leave it to be
performed by ks_checker.

Change-Id: If4d0473da69c0d1cdd05f1b24a66c7caafb25c6e
Signed-off-by: Raphanus Lo <raphanus_lo@asus.com>