RIL: Restart the daemon when requested

Following arcee's implementation
(but RIL_UNSOL_LGE_RESTART_RILD is 1054 not 1055 at our RIL):

https://github.com/CyanogenMod/android_device_lge_p880/commit/44b2b25204032244735022496faacf5a7a9e8224