uncrypt needs to be called when an OTA package sits on /data. If uncrypt fails or gets skipped (likely due to unexpected runtime restart during the reboot), we should abort the rebooting. Because otherwise a) it would fail for sure when reboots into recovery; b) useful logs would be gone once it reboots. Bug: 26444951 Change-Id: Ic3bc682b03f003f197e277ed6b6886e85f364754