To install powerd's package:

$ adb reboot recovery
$ adb shell
~ # export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
~ # mount /system
~ # chroot /system /bin/bash
root@localhost:/# touch /etc/init.d/powerd
root@localhost:/# dpkg -i /var/cache/apt/archives/powerd_0.16+14.10.20140819-0ubuntu1_armhf.deb
(Reading database ... 39993 files and directories currently installed.)
Preparing to unpack .../powerd_0.16+14.10.20140819-0ubuntu1_armhf.deb ...
Unpacking powerd (0.16+14.10.20140819-0ubuntu1) over (0.16+14.10.20140819-0ubuntu1) ...
Setting up powerd (0.16+14.10.20140819-0ubuntu1) ...
Processing triggers for ureadahead (0.100.0-16) ...
root@localhost:/# rm /etc/init.d/powerd 
root@localhost:/# sync
root@localhost:/# exit