aries-common: add 'soft reboot' option

Complements http://review.cyanogenmod.org/67837

Change-Id: I97e961e0cc3fee2e60194aaaf9329da2378ce543
Merge "aries-common: add 'soft reboot' option" into cm-11.0
Merge branch 'cm-11.0' into kk_mkt